Hi, I have rOCD

I've spent a lot of time reading about myself and pretty certain I have anxious attachment style and ROCD. In my early 20s I would have situationships that I'd pretend I was OK with being casual but when they called it off I'd get obsessive and stalk their Facebook accounts, and message alot. I met my ex in 2015 and I was anxious then but he managed to stay and see past it, we dated for 5 years and had a child and still friends now. I remained single for 3.5 years while apparently working on my anxieties but now I'm dating again the old thinking process is back. This guy is wonderful, so kind, caring, great listener, social, funny, great cook,great chemistry but my mind is constantly looking for faults. Reassurance seeking. Does he still love his ex? Does he see a future with me (it's been a few months). I sway between Does he like me and Do I like him?

I've opened up a little and he listens but I'm wary of pushing him away. Now I'm aware of why I am way I am, I want to heal it.

Any advice?