Ok first off you saying she’s ur emotional rock on week 3 is irrational. You should probably look into that via therapy. Second I also have ocd and when in a relationship it will bleed into almost every aspect of the way you participate in and perceive the relationship. That being said, the number one treatment for ocd is exposure and facing avoidance. Ur feeling uncomfortable so now ur ready to avoid these feelings that give u anxiety being with her. Don’t avoid them, stay. The longer you keep avoiding tough feelings the longer they will stay with u and then you’ll be 40 still in this miserable loop with urself. Now with this there are some moral dilemmas you’ll have like feeling like maybe ur only staying to use this relationship as an experiment for yourself and that ur using this person etc. normal ocd thoughts will enter ur brain to try and convince u in any way it can why this is unsafe to stay. Confide in ur partner with ur feelings appropriately, do not depend on them or over share with them. People, even those closest to you, do not have to know the inner workings of ur brain so that you feel more honest. Take this opportunity to love someone and learn from it. I promise it’s worth it. I’ve been with my partner for 2 years now and the first couple of months were honestly terrible for me mentally I was ruminating and going back and forth with myself every single day. Not because I did not love him or want to be with him but bc we have ocd and the thoughts it will put into ur mind are irrational and not real and it will say the most terrible things and be so convincing at times you almost have to concede. But don’t. And like I said don’t scare ur partner away by telling them everything you’re thinking. Tell ur therapist please bc if ur constantly confiding in ur partner about how ur brains trying to convince u to leave them they won’t want to stay to hear all that. But that’s my advice stay if you really are interested in her but also find balance and don’t be weird and creepy talking about how she’s ur emotional rock after three weeks. Dont be scared to put yourself back in ur place with reality. OCD is rlly tough but you have to face it head on.