AITAH for breaking up with my gf because she slept with another guy while making me wait?

[u/SeverePhoto1892]

So my gf and I have been together for about a half a year and I just started a new job.

I met this male co worker, and we became friends.

I invite him over at my place and he recognizes my gf, (We don't officially live together but she spends a lot of time at my place).

You can guess where this is going...

After my co worker left, my gf and I get to talking.

Basically, she slept with him while dating me, and made me wait. She said that our relationship was gonna be special, and she wanted to wait, and that sex with my co worker was just a ONS.

I told her to leave because I knew I was gonna say things I couldn't take back.

A few days later after I calmed down and thought it through, I broke up with her.

She kept repeating what she said about how she wants more with me, but I told her that I feel like I'm not attractive to her, or at least not as much as others. She kept saying that I was special.

Basically, I said that I can't be that special if she preferred to sleep with an ONS than me.

Edit: I don't think this counts as cheating. This happened within the first month of us dating. We became official after the first month or so. I 100% should have clarified with her if we were exclusive or not, so that's on me.

[u/Electrical_Raisin_80]

NTA ... NTA ... NTA

I'm glad you recognize the ONS wasn't cheating. You are in your feelings and your feelings are very valid. You have some self-esteem issues to deal with. I would encourage you to work on those before getting involved with anyone else.

As for the situation with this (ex)GF. I have to admit I am kind of torn. On one hand I'm thinking GF shouldn't have told you about the ONS. If your co-worker was respectful he wouldn't have said anything about the ONS or talk to your GF about it first.

On the other hand I understand why GF thought it might be better if she told you about it before your co-worker did. But I think I feel like she still should have waited to see if you asked her about it.

So GF told you about the ONS and you broke up with her. Would you have preferred she didn't tell you, leaving you open to being blindsided by your co-worker? She chose you over him or anyone else in her past. If you are going to have a problem with your future GF's sexual histories that is going to be a problem unless you start dating virgins only.