I feel like my OCD centers more around platonic friendships in relation to my partner

With my OCD I obsess over the concept of friendships, my social status, people in my communuty circle and the friendships my partner has. I get very insecure and fear im being replaced even though he has proven to me he wouldn't do that. I don't have many friends myself, struggle with social anxiety that I think was OCD this whole time and yeah... I love my partner still.

He hurt me very early in our relationship with one of his female friends by just hanging out with them and activey lying to me about it. I've been fixated on this person and fear he is going to form a bigger emotional connection and friendship than I have with him. This person is the exact person I wanted to become and it happened after my father passed and I was going through a major identity crisis... I know she poses no threat and her only crime is she is too cool, talented, funny and has good banter with my boyfriend... and they made music together which I cant do and has always been a dream of mine... like this person became the face of every insecurity of mine...

I compulsively check her Instagram page..its bad.. as well as his, his following, checked his phone and kept a log like a creep so I don't have to keep checking his phone... I need reassurance that they weren't into each other at the time. And no matter how much i got, i needed more but couldnt bare to let him know how bad... I'm not scared he a gonna physically cheat, its like the connections friendship make is a gisnt trigger topic. I never understood them. Im very ashamed and just internalize it all and get very depressed and distant. Its hard to try to find comfort and lean on the person you don't want knowing is triggering you irrationally...

Everything about my relationship is really good otherwise....He's aware I am newley diagnosed ocd and we are working through it together. Ive done some damage to him with withholding telling him why im upset but very clearly being bad at hiding im upset... He is scared something he does that he views as small will haunt him this significantly years later... he cares about me. I objectively know this. I can not let this obsession, hurt, ruminating, hypothesizing keep controlling me. This friend isn't going away... no matter how hard I've tried to distance myself from them. They actually only got closer somehow... im the problem. Its all insecurity.

Is this rocd or am I crazy... I just don't feel like I question my feelings towards him at all like I see so often..