What are Boundaries? Boundaries vs. Requests
Boundaries are one of the most used and least understood concepts in betrayal trauma recovery. People walk into my office with a list of things their partner has to do and a list of expectations for their partners, and call it a set of boundaries. Empowered with these lists, betrayed partners can't figure out why they feel even more powerless.
Here's the distinction, and it's one that changes how the whole thing works: a boundary is about your behavior, not your partner's. That single shift is the difference between boundaries being a tool that actually protects you versus a demand that leaves you feeling more betrayed, lost, and powerless in your healing.
You can ask your partner for almost anything. Transparency. Honesty. Access to their phone. A full therapeutic disclosure of what happened. Those are requests, and betraying partners who want to heal themselves and the relationship eventually (that’s key, eventually, not all at once) get there. But requests depend on the other person saying yes. Your boundary is what you do if they say no.
This is the piece Michelle Mays draws straight from Pia Mellody, one of the early pioneers in defining how boundary systems actually work. Boundaries are always about your behavior and not about other people's behavior. Many people try to use boundaries to control the behavior of another person. Michelle describes a client who told her mother that her "boundary" was that Mom couldn't bring up her boyfriend anymore, and Mom kept doing it.
So the client rewrote it. Same situation, different structure: I find it hard to talk about my boyfriend with you, so I'm asking you not to bring the topic up. If you do, I'll ask you to change the subject. If you won't, (Here’s the boundary) I'll end the call, and we'll talk another time.
See what moved? The request stayed a request. The boundary became a decision the daughter controlled completely. Her mother could do whatever she wanted, and the daughter was still covered either way.
That's the test for every boundary you write. If it only works when your partner cooperates, it's a request in boundary's clothing.
Why does this matter so much for your healing?
The time you need boundaries most is right after discovery, which is exactly when you're the least equipped to set boundaries. It takes Herculean effort to set boundaries with your partner. You’re either motivated by revenge, hurting them as badly as they have hurt you, or you’re stuck in functional fawning (more on this in a later post), trying desperately to keep the relationship together.
Defining real boundaries pulls you out of the impossible job of managing another grown adult and puts you back in charge of the only person you can actually control, YOU! It also helps you define the hurt so that you can express rather than suppress the pain that functional fawning tends to lead us into.
Michelle splits boundaries into two parts.
Protective Boundaries: These are to help you interact with people while feeling safe from them threatening your physical, emotional, intellectual, spiritual, and sexual space.
Containment boundaries: These keep you from becoming offensive or harming someone else's space. After betrayal, most people put everything into protection and forget containment is essential too. Raging, pain shopping (not the same as investigation, more in another blog post), and punishing are areas where personal containment boundaries are needed. Without boundaries with yourself, it will cost you more than your partner. Both halves have to work.
And notice that a functional boundary is what lets you safely be in relationship with others. They're protective, not punitive. You're not building a wall. You're building a bridge of conditions under which connection is even possible again.
Areas Worth Thinking Through
Boundaries aren’t a checklist to hand your partner. Requests can be a list to give your partner, but the boundaries are the things you will do to care for yourself if the requests are not respected/met.
Boundaries are a starting place for your own work, ideally with your own therapist. Boundaries are areas that, when mapped out, are what people actually face after discovery.
Physical & Sexual:
Usually you have to feel physically safe before you can feel emotionally safe. That covers living arrangements, whether you're sharing a bed, non-sexual touch, and sexual contact. STI testing with results shared directly is standard. Pausing sexual contact for a set period is common, and it isn't punishment. Boundaries are felt in the body. If something doesn’t feel right, listen to your body. Your body will give you a lot of safety information.
Emotional:
These are the boundaries you set with yourself to get through the deviation and pain of betrayal. A commitment to engage in self-care when you're triggered. A commitment to leave conversations that overwhelm your ability to cope. Saying that I'm not going to keep talking about this tonight is a complete sentence, and it's a boundary you can keep no matter what your partner does.
The Practical Logistics:
Financial access, communication (how and when hard information gets shared, whether questions get answered at midnight or in a structured session). What you need may change as your circumstances change, so your boundaries won't be static.
Boundaries for the Partner Who Betrayed
Boundaries are for the betraying partner too. For the person in recovery, a boundary is where you practice choice and agency, so that when you say yes to something, it's a real yes and not fear-based appeasement. Compliance to keep the peace isn't the same as commitment, and both of you can feel the difference. Compliance will never create recovery for you or safety for your partner. The betraying partner’s work is learning to make wholehearted choices you'll actually stand behind, not managing the other person's reaction to you.
Write Boundaries That Hold
A boundary that works usually has four parts:
What you need, stated specifically enough that both of you would know whether it happened.
Why, tied to safety rather than punishment.
What you'll do if it doesn't happen.
And follow-through, which is where most boundaries die.
Don't set a boundary you aren't ready to keep. A small one you enforce every time is worth more than a sweeping one you never enforce, because every unkept boundary teaches your partner that your words don't carry weight. Say it once, clearly. Don't re-explain it ten times. Put a review date on the calendar, thirty or sixty days out, so it doesn't feel permanent and so you're not renegotiating in the middle of a fight. Before all of this, discuss with your therapist and recovery group.
Expect pushback. Someone who has been managing the truth tends to resist losing the ability to manage it. Their reaction isn't the measure of whether you got it right. What they do over the next few weeks is.
When You’re Not Safe
A boundary assumes the other person is safe enough to be around, even after real harm. If your partner threatens you, controls your money or movement, or you're afraid of what happens when you say no, that's a different situation and it needs a different response. Setting a boundary with someone dangerous can raise the risk, not lower it. Talk to a professional and get a real safety plan.
Finally.
You don't have to decide about the marriage before you set boundaries. That's backwards. You can't find clarity while your body is in survival mode, and boundaries are part of what settles your body down enough to hear yourself. First learn to set boundaries, then decide what you need to do after finding some clarity.
Get your own therapist, separate from any couples work, ideally someone trained in betrayal trauma such as a CSAT or CPTT. Couples therapy too early tends to put you in a room defending your needs to the person who caused the injury. Your individual work is where boundaries get built and tested.
Give yourself a lot of compassion. You’re not going to do this process perfectly. No one expects you to. You're also being asked to build something while your foundation is still moving from the aftershocks.
Sources: Michelle Mays, LPC, CSAT-S, Understanding Boundaries and Creating and Maintaining Effective Boundaries, Part 1 (PartnerHope / Relational Recovery); boundary-system framework drawn from Pia Mellody. Mays's video, Boundaries & Your Ability to Choose (youtube.com/watch?v=j8r2O2D--pY).