Should my partner know about my relationship OCD?
Telling the person your doubts are about that you have doubts feels impossible. Here is how confession and reassurance fit into ROCD, and how partners can help without feeding it.

There is a particular bind in relationship OCD. The person you would normally turn to for support is the person the doubts are about. Telling them feels like a betrayal, or a threat, or the beginning of the end. Not telling them means carrying it alone, inside the relationship, while pretending to be fine. Neither feels possible.
I want to work through this, because whether and how your partner is involved shapes how the treatment goes.
Confession is a compulsion
Many people with ROCD are already telling their partner, constantly, in the form of confession. I had a doubt today. I noticed someone. I do not know if I feel enough. It comes out as honesty, and it feels like honesty. The partner reassures: of course you love me, it is just a thought. The relief arrives. And the doubt is back the next day, needing to be confessed again.
Confession is reassurance-seeking with extra steps. It hands the checking to your partner, and it teaches your brain, as every compulsion does, that the doubt was serious enough to need airing. It also, over time, does something to the relationship: your partner becomes a reassurance dispenser, and the reassurance itself becomes something they resent giving and you resent needing.
Why reassurance from a partner does not work
It fails for the same reason reassurance never works in OCD. The doubt wants certainty, and certainty is not something anyone can give about a feeling. Your partner says "I know you love me", and the doubt says "but do I really", and the loop turns. No amount of their confidence can substitute for the thing ROCD is actually demanding, which is proof, and proof does not exist.
So should they know?
That is entirely your choice, and it is never required. Plenty of people do this work without their partner ever knowing the detail. What I can tell you is what tends to help.
If your partner is already involved through confession and reassurance, it usually helps for them to understand what is happening, because the reassurance needs to be withdrawn, and withdrawn kindly. A partner who suddenly stops answering "do you think I love you?" without knowing why will seem cold, and the change will feel like confirmation of the fear. A partner who knows the plan can decline warmly: "I'm not going to answer that one, because we agreed I wouldn't, and I'm here."
If your partner is not involved, and the compulsions are all internal, there may be no need for them to know more than that you are working on some anxiety. It depends on you, and on the relationship.
Bringing them to a session
Sometimes it helps to bring your partner to a single session, with your agreement, to explain the model and agree how reassurance will be handled. This is not couples therapy; the work is yours. It is one conversation to get everyone reading from the same page, so that the change in how you talk about doubt is understood rather than misread. Some people find this the single most useful session of the course.
What to say if you do tell them
People sometimes worry that telling their partner about ROCD will hurt them: you are saying you doubt us. It helps to frame it accurately. ROCD is a doubt-generating machine that has attached itself to the relationship, and the treatment is aimed at the machine rather than at the relationship. Partners who understand that tend to feel relieved rather than threatened, because it explains the questions they have been fielding.
What the treatment does
CBT with exposure and response prevention: we identify the checking, comparing, confessing and reassurance-seeking, and practise letting the doubts stand unanswered. Therapy does not tell you whether to stay; it returns the decision to you, freed from the interrogation. A typical course runs 12 to 16 weekly sessions.
If you are stuck between telling and not telling, there is more on how I treat relationship OCD, and the question of your partner is one we can work out together.