I’m so scared my partner is cheating on me. I just want to give up :(

For about a month now I’ve been really obsessed with the idea that my girlfriend has feelings for this guy we know if he has feelings for her. We’ve only known him for about a month and we’re not that close to him. The stuff that makes me worried is completely normal for friends to do or are things that aren’t real. . They respond to each other on group chats . They hangout in groups when I’m not there . She finds him funny and smiles when she’s around him . I just have a bad feeling It’s become such a thing in my mind and it’s deteriorating our relationship. Every time I see him and her talk I feel mad and sick and anxious. And now I’m starting to hate him. I feel like I’m being so unfair because she hasn’t actually done anything, and I keep accusing her and treating her like she has. She says she feels like all I see is the worst in her and like she’s a bad person. I’ve brought this up to her many times and every time she tells me she would never cheat on me and that he’s some random guy and that she doesn’t want him she wants me. I just can’t get the idea out of my head, I can’t stop unconsciously looking for signs of romantic feelings between them. I analyse her body language or how she looks at him, I check if there online at the same time to see if their texting or something. It’s really bad. It’s gotten to the point where it’s not about the idea that they have feeings anymore it’s more just I want to get the idea out my head. I want to stop seeing this. Because she would have said something by now. And I know this is coming from a place of fear and insecurity about myself and the way she feels about me, because he’s no different to any of her other friends I just chose him to be the one I worry about. I want to get past this because our relationship needs to move past this and I want to be able to enjoy the time I spend with my friends instead of relating it to this and the idea of hanging out in this group with her where he is, and if causing instant anxiety. She’s not like this, she’s a good person. It’s not necessarily the idea she’ll actually cheat it’s the idea she’ll develop feeling or he will and will make her catch feelings too. It’s all just a “bad feeling” I have and an obsession with this idea. I can’t stand to be around them in a group cuz all I can see is that “she’s in love with him” or “he would make her or does make her happier”

For some time i was obsessing over relationship with my girlfriend. For a long time we we're each other's best friends and we only had each other. Recently she made a good friend in work and im obviously really happy for her because she deserves to be loved by more people than me. But i started to feel really jealous. I never thought she can cheat on me i just have really low self esteem and i started to obsess over if she is still in love with me or if she is still attracted to me bc she sometimes would be more interested to spend time with that friend and not me. We talked about it a lot and i tried my best to not be jealous and give her space but i felt how she's distancing from me. At some point she stopped showing me her love in any way. She stopped hugging me and kissing me and she kinda stop telling me she loves me. She only responded "me too" when i told her i love her. I talked about it with her few times and she always said she understands and that she's tired and don't really need physical touch etc. But i was still worrying bc i just knew something is off. She really was acting different. And then few days ago she told me she's actually tired not because of job but me. She feels irritated by me and she don't know why and that she actually thought about breaking up with me and she don't know what to do because she's confused about her own feelings. She said she thinks she still loves me but it's hard for her to see a difference between friendship and love and that she feels tired of concept of dating someone. She said we should wait and see bc she thinks she still loves me but i don't know if that's honest. I don't know what to do anymore im crying all the time every day since that conversation we had. I feel like my worst nightmare just came true and now it's real and not only a though in my head. I can't do anything and i feel like it's the end of the world. We're living together and i don't want to go back to my parents but that's not the worst thing. I just love her so much and i can't hande thought of loosing her. My ocd made me question every single thing about me but somehow i never questioned my love for her so that's why I'm so emotional about it. I don't want to lose her. I don't know what to do i just want to be loved but I don't want anyone else. I don't know what to do im so scared. I want to die every time i look at her with love in my heart and i know she doesn't think about me like that anymore.

I am so deeply terrified of the possibility that I could be emotionally cheating on my partner. This obsession has dominated my psyche for 6 months now, and even though I have told my partner about my crush, told him about my fantasies, told him about my fear of emotional cheating, and done everything in my power to eliminate ANY sort of closeness with this person in a group setting (including keeping them at arm’s length, acting aloof, ignoring them, ensuring that I’m never alone with them, ensuring that I never initiate conversation with them EVER even in group settings, even obsessively monitoring how often I reply to other people in a group server), the guilt still doesn’t stop. I feel like i’m going crazy. I’m googling “emotional cheating definition” like every single day and trying to figure out if having a crush counts (even though my partner knows and says it’s okay).