Five books stand out for rebuilding trust after infidelity in 2026, and each one earns its place for a different reason, not because they're interchangeable. Best overall: "After the Affair" by Janis Abrahms Spring. Best for structured exercises as a couple: "Getting Past the Affair" by Douglas K. Snyder, Donald H. Baucom, and Kristina Coop Gordon. Best for setting new boundaries: "Not Just Friends" by Shirley P. Glass. Best for the betrayed partner working through the forgiveness decision: "How Can I Forgive You?" also by Janis Abrahms Spring. Best for understanding why affairs happen at all: "The State of Affairs" by Esther Perel.
Books help you process what happened between sessions or before you've decided to book any at all. They don't replace a Registered Psychologist working with you and your partner in the room, but the right one gives you language for a conversation you don't yet know how to start.
- After the Affair by Janis Abrahms Spring is the best overall pick for couples rebuilding trust after infidelity in 2026.
- Getting Past the Affair pairs narrative with structured exercises for couples who want homework, not just theory.
- Not Just Friends is the strongest choice for defining boundaries that prevent a repeat betrayal.
- How Can I Forgive You? speaks directly to the betrayed partner’s forgiveness decision.
- None of these books substitute for couples counselling when trust hasn’t started rebuilding after several months.
Why this matters
Infidelity recovery stalls when the betrayed partner reads everything alone and the partner who had the affair reads nothing. A shared book gives both people the same vocabulary for concepts like "trustworthiness," "the window of forgiveness," and "boundary repair" instead of one partner improvising therapy-speak the other has never encountered. Rebuilding trust after infidelity takes a predictable arc through crisis, understanding, and rebuilding, and the books below map onto those three stages differently. Reading in the wrong order — jumping straight to a workbook before either partner understands why the affair happened — is the most common reason couples stall after finishing a book instead of moving through it.
What makes the best book on rebuilding trust
- Clinical credibility — the author has a documented research or clinical background in infidelity, not just general relationship advice
- Practical exercises, not only theory — workbooks with prompts outperform narrative-only books for behavior change
- Speaks to both partners, not just the betrayed spouse's grief or the unfaithful partner's guilt
- Distinguishes stages — crisis stabilization, understanding the affair, and long-term rebuilding require different tools
- Realistic about timelines — credible books say rebuilding takes months to years, not weeks
- A format you'll actually finish — some couples need a workbook with fill-in pages, others need a narrative they read separately and discuss
At a glance
| Book | Author | Best for | Standout feature | Key limitation |
|---|---|---|---|---|
| After the Affair | Janis Abrahms Spring | Couples committed to rebuilding together | Balances both partners' perspectives without minimizing betrayal | Dense for a first read during acute crisis |
| Not Just Friends | Shirley P. Glass | Defining and rebuilding boundaries | Concrete framework for what counts as emotional infidelity | Less focused on the forgiveness process itself |
| Getting Past the Affair | Snyder, Baucom, Gordon | Couples wanting structured exercises | Workbook format with step-by-step prompts | Requires both partners doing the work, not just one |
| How Can I Forgive You? | Janis Abrahms Spring | The betrayed partner deciding whether to forgive | Frames forgiveness as a choice, not an obligation | Written mainly for one partner's perspective |
| The State of Affairs | Esther Perel | Understanding why affairs happen | Broadens the lens beyond blame to relationship dynamics | Less prescriptive on rebuilding steps |
1. After the Affair: best overall for couples committed to rebuilding
Janis Abrahms Spring, a clinical psychologist who has specialized in infidelity recovery for decades, wrote this as the book most therapists hand to couples first. It covers the crisis phase, the decision of whether to stay, and a rebuilding process that treats trust as something reconstructed through specific, repeated actions rather than a single apology.
After the Affair pros:
- Addresses both the betrayed partner's trauma response and the unfaithful partner's guilt without picking a side
- Includes a step-by-step model for rebuilding rather than vague encouragement to "just talk"
- Widely referenced by couples therapists, which makes it a common starting point if you later start sessions
After the Affair cons:
- Reads dense for a couple still in acute crisis within the first weeks
- Offers fewer fill-in exercises than the workbook-style options on this list
Best for: couples who've decided to stay together and want a full map of the recovery process. Verdict: Buy.
2. Not Just Friends: best for rebuilding boundaries
Shirley P. Glass researched emotional and physical infidelity for over 30 years, and this book is built around her "walls and windows" concept — the idea that trust erodes when a partner puts up walls with their spouse while opening windows to someone else. It's the sharpest resource on this list for couples who need language to define what crossed a line in the first place.
Not Just Friends pros:
- Gives specific, nameable boundaries rather than abstract advice about "being more honest"
- Useful even for couples debating whether what happened counts as an affair at all
- Backed by original research rather than clinical anecdote alone
Not Just Friends cons:
- Less depth on the forgiveness and rebuilding process compared to After the Affair
- Some case examples reflect an earlier era of communication, before texting and social media dominated affair patterns
Best for: couples still working out what boundaries need to change going forward. Verdict: Buy.
3. Getting Past the Affair: best structured workbook for couples
Douglas K. Snyder, Donald H. Baucom, and Kristina Coop Gordon built this around a research-tested treatment model with actual exercises to complete together, not just chapters to read separately. Couples who want homework between sessions, or who aren't in counselling yet and want structure on their own, get more out of this than a narrative-only book.
Getting Past the Affair pros:
- Exercises are sequenced to match a realistic recovery timeline
- Both partners have dedicated sections addressing their specific role in rebuilding
- Grounded in a published treatment protocol, not just clinical opinion
Getting Past the Affair cons:
- Only works if both partners actually complete the exercises — one partner reading alone gets limited value
- Workbook format feels clinical to readers who prefer a narrative style
Best for: couples who want a step-by-step process instead of general encouragement. Verdict: Buy.
4. How Can I Forgive You?: best for the betrayed partner's forgiveness decision
Also by Janis Abrahms Spring, this book zeroes in on one specific fork in the road: whether and how to forgive. It treats "cheap forgiveness" (forgiving too fast to avoid conflict) and "refusal to forgive" (staying stuck in resentment) as two failure modes, and lays out what she calls "genuine forgiveness" as a third path that requires real accountability from the partner who had the affair.
How Can I Forgive You? pros:
- Directly names the pressure many betrayed partners feel to forgive before they're ready
- Clear framework distinguishing performative apology from real accountability
- Short enough to finish in a few sittings during an emotionally intense period
How Can I Forgive You? cons:
- Written primarily from the betrayed partner's vantage point, less useful read alone by the partner who had the affair
- Doesn't cover long-term rebuilding once the forgiveness decision is made
Best for: the betrayed partner who feels stuck between forgiving too fast and not forgiving at all. Verdict: Buy.
5. The State of Affairs: best for understanding why affairs happen
Esther Perel's book steps back from the rebuild-or-leave question to ask why infidelity happens in the first place, drawing on interview material and broader cultural patterns around desire, identity, and monogamy. It's less a rebuilding manual and more a reframe of the entire conversation, which some couples find clarifying and others find frustrating when they wanted concrete steps.
The State of Affairs pros:
- Reframes infidelity as more complicated than a simple morality failure, which can lower defensiveness in early conversations
- Strong for the partner who had the affair and is struggling to explain their own behavior
- Well-researched and widely discussed, so it's easy to find follow-up material and interviews
The State of Affairs cons:
- Offers little in the way of structured exercises or a step-by-step rebuilding process
- Can feel abstract to a couple in acute crisis who wants direction, not theory
Best for: individual reflection on why the affair happened, especially for the partner who strayed. Verdict: Buy — pair with a more structured book.
“Trust rebuilds through specific actions repeated over months, not one grand gesture or apology.”
How these were ranked
Each book was weighed against the six criteria above: author credibility, practical exercises, whether it speaks to both partners, stage-appropriate content, realistic timelines, and format. After the Affair ranks first because it covers the full arc from crisis to rebuilding while staying balanced between both partners. The other four books each win a specific use case — boundaries, structured exercises, the forgiveness decision, or understanding the affair's origins — rather than competing for the same slot.
Ready to work through this with support?
Couples counselling for trust and infidelity recovery in Lethbridge, in person or virtual.
Which book should you choose?
If you're only going to read one, After the Affair covers the most ground for a couple committed to staying together in 2026. If you're still deciding whether to stay, pair it with The State of Affairs for context on why the affair happened. If you're already in counselling and want homework between sessions, Getting Past the Affair gives you structured exercises rather than more reading. Books are a starting point, not a finish line — how to know if you and your partner need couples counselling covers signs that reading alone isn't moving you forward and it's time to bring in a Registered Psychologist.
FAQ
What is the best book on rebuilding trust after infidelity?
After the Affair by Janis Abrahms Spring is the best overall book on rebuilding trust after infidelity in 2026 because it covers crisis, understanding, and long-term rebuilding for both partners. Couples who want structured exercises instead of narrative should pair it with Getting Past the Affair.
Should both partners read the same book?
Yes, reading the same book gives both partners shared language for concepts like trustworthiness and forgiveness instead of one partner improvising therapy terms the other has never heard. Discuss a chapter at a time rather than finishing the whole book separately.
Is How Can I Forgive You? better than After the Affair?
They serve different purposes: How Can I Forgive You? focuses narrowly on the betrayed partner’s forgiveness decision, while After the Affair covers the full rebuilding process for both partners. Most couples get more value starting with After the Affair and moving to the forgiveness-specific book if that decision is the sticking point.
How long does it take to rebuild trust after infidelity?
Credible resources including After the Affair describe rebuilding trust as a process of months to a few years, not weeks. Progress is measured in consistent, specific actions repeated over time rather than a single conversation or apology.
Can a book replace couples counselling after an affair?
A book can give you language and structure between sessions, but it can’t respond to what’s actually happening in your relationship the way a Registered Psychologist can in real time. If trust hasn’t started rebuilding after several months of reading and talking on your own, that’s a sign to bring in outside support.
What’s the best book for the partner who had the affair, not the betrayed partner?
The State of Affairs by Esther Perel is the strongest pick for the partner who had the affair, since it explores why infidelity happens rather than focusing mainly on the betrayed partner’s experience. Pair it with a more structured book like Getting Past the Affair for concrete rebuilding steps.
Are workbook-style infidelity books more effective than narrative ones?
Workbook-style books like Getting Past the Affair work better for couples who complete exercises together, while narrative books like After the Affair suit couples who prefer reading and discussing separately. Neither format works if only one partner engages with it.
What if we’ve read every book and trust still hasn’t rebuilt?
That’s a common signal that self-guided reading has reached its limit and structured couples counselling is the next step. A Registered Psychologist can address patterns a book can’t, including how each partner actually responds to conflict in the room.
One last thing
The books that work best pair a narrative resource with a structured one — reading After the Affair alone without doing any of the rebuilding exercises is the single most common reason couples say the book "didn't help." Understanding why the affair happened matters, but understanding without action doesn't rebuild anything. If you've read through a couple of these titles in 2026 and the trust still isn't moving, that's not a sign the books failed — it's a sign the relationship needs a third person in the room. For couples who've decided the relationship can't continue, individual therapy for people going through separation covers a different kind of rebuilding: your own.
Related guides
- Marriage counselling for couples considering separation
- Individual therapy for people going through separation
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