How to stop overthinking my boyfriend is cheating?

Hello everyone! I’m new to this app and I am just looking for some help or any advice. I am 20 years old and female. I constantly think about the past and what has happened to me and my boyfriend. (Mostly about him and his ex and if he liked her more). No matter how hard I try these thoughts just flood my mind and nothing that I do helps me avoid them. I have always had issues with constant thoughts about the past and things that are stressing me out, and they just don’t go away. I thought that the thoughts about my boyfriend’s ex would fade but i’ve been with him for 2 years now and they are still constant everyday. I feel like I have to know what she’s up to and check her social media daily, if not multiple times in a day. I also check my ex’s social media daily. I don’t want to do this but I feel like I have to, and If I try not to it just makes me feel anxious. My ex was verbally and physically abusive, I was 15-17 and we were together for those two years. I have gone to PTSD therapy and I still have thoughts over and over about what happened and I wonder if it was even real. Or if I’m even remembering what happened correctly. I have constant thoughts about him and what happened between us. I also have issues such as kind of twitching when i’m really stressed out or something isn’t “right” to me. I constantly have to clean and put things in their place. I have a routine that I do everyday, such as showering in a certain order, doing my skincare in a certain order, and doing things at work in a certain order. Is this normal? And how do I help these thoughts go away… Because they have gotten so bad that it distracts me all day and is interfering with having a future with my boyfriend.

I know he’s not cheating on me. He’d never do that and, as hard as I try to tell myself “he’s proven already that he’s not” and show myself all the signs of commitment and dedication, I still have that fear. It’s eating at me and ruining my relationship. How do you guys get over this? If my brain were true he’d have been cheating on me for months in ways that aren’t even possible. It doesn’t make sense if I think about it logically but it seems like when I do, I create in my head more ways for it to be logically true. What is your advice? How can I stop self sabotaging?

I’ve been struggling with something that’s been really overwhelming, and I’m hoping to get some perspective from others here. I feel a lot of guilt about it, and I’m not sure if I’m alone in this experience. Lately, I’ve found myself daydreaming about romantic situations or getting caught up in ‘what if’ scenarios—where I wonder if I could develop feelings for someone else, or if someone develops feelings for me. The thing is, I’m in a relationship that I love, and I don’t want to act on these thoughts at all. What makes it even harder is that these thoughts often hyperfixate on one specific friend, and sometimes they feel entertaining or give me a dopamine rush. But then, of course, I feel even more guilty because it makes me feel like I’m betraying my boyfriend. These thoughts usually happen when I’m upset and looking for comfort, but then they morph into romantic scenarios, which makes me feel so disloyal. I’m constantly going back and forth between feeling curious or entertained by the thoughts and then feeling horrible for even allowing them to happen in the first place. I keep confessing these thoughts to my boyfriend, and he tries to be understanding. He’s just never been the type to daydream, so he doesn’t know if this is something other people experience or if it’s just me. I feel like such an awful girlfriend. Has anyone else dealt with something like this?