ROCD Help?

I’m new to both the OCD diagnosis and this group. I got into a new relationship about 10 months ago and since then, ROCD has effectively taken over every aspect of my brain. I have been excessively doubting myself, my confidence is lower than it has been in years, and I’m constantly questioning if my partner’s cheating or actually wants to be with me. This leads to me needing reassurance from him that he really can’t give me because the insecurities are all from my brain running rampant with obsessive thoughts. He is so patient and understanding, and the logical side of me trusts him completely. How do I sit with these feelings and accept them without taking this out on him? I’m so scared I’m pushing him away. ):