This is my opinion on this, others will disagree as usual. There really isn't such thing as HOCD. It's just a term coined to make money by pharmaceutical companies and psychiatrists so they can prescribe drugs that treat actual OCD, which you don't have. What you do have is either a case of insecurity that was lingering unnoticed until it got triggered by a bad relationship, or you really are attracted to women as well as men, which makes you bisexual at least in your imagination. It's unlikely the latter is the case, as your relationships have all been with men. What many people have without being aware of it is a bias against gay people and therefore a fear can arise that one might be gay. If you are gay, so what? That's fine. The fact the idea bothers you so much is because most of us grow up hearing others expressing anti-gay bias. Otherwise we wouldn't care, right? I went through this once when I went through a bad break-up when I was young, and my concern all went away when I saw a therapist twice and was told it was perfectly normal. Never bothered me again. Maybe you could use such confirmation because again, you're not acting on this you're just thinking about it. Attractive women are nice to look at for both men and women. Doing something about it is a different thing. If you truly want to have sex with women, do it. If you truly don't, which is what it sounds like, don't do it. You can see how there's a difference between considering something and being bothered this much be considering something. We consider all sorts of things in life; it's only a problem when it bothers you this much. So don't worry about that scary label HOCD, it's really meaningless. Anxiety is anxiety, insecurity is insecurity, we can focus it on anything and right now you've focused it on this. To deal with it, that's what you need to tackle, why you started thinking about this and why it bothers you to think about this. And if you need help to stop thinking about it, look at it as a bout of anxiety and either relax about it so it loses its importance to you or see a professional who can help you talk through it and discover why you started wondering about your sexuality and why it's bothering you so much. Peace.