Does anyone else have an irrational fear of being cheated on?

If so, and you’ve gotten through this, how did you get through it? How did you make it better for yourself?

I’ve constantly got negative thoughts and scenarios running through my head of what my fiancé might be doing at any given moment. I can be grocery shopping or out with my kids and I just feel the need to see if he is active on Facebook, Instagram or even discord where he voice chats with his friends when they play games online together. He has even deleted the Snapchat app from his phone, but I still get on my Snapchat just to check to see if his points have went up any. Here recently the thought that he may have created another Snapchat to throw me off has popped into my head.

I have been laying in bed at night and had anxiety attacks over this. I’ll just lay there wondering why he hasn’t texted me, who he is talking to instead of me, and then thinking that I’m not good enough and why he’d want to be with me in the first place. It gets to the point I put myself down in the end and I blame myself, that if he is cheating it’s only my fault.

It’s literally gotten so bad it’s just messing with my daily life in general. I’m in need of constant reassurance, even though I don’t get that. I don’t know what to do or how to stop it. I’ve done this for as long as I can remember really. I mean I was in a pretty messed up relationship for 9 years. But now that I’m pretty sure I’m in a good relationship, I still think like I did in my old one. I’m going to fuck it up with this stupid fear of mine and I don’t know what to do.😞