Now, I know the title makes me quite clearly seem like the asshole. However, I wouldn't be posting this if I didn't have a side of the story that no one seems to want to hear.

Me and my girlfriend have been together for almost five years now. On and off I should probably add but nothing to do with cheating just a couple of rough arguments that lead to unwanted break ups to then leading us back to each other. I do believe we are happy together and I'd like to think she'd agree.

Unfortunately, I let my thoughts get the better of me one evening last week and decided to snoop through her phone. I had my reasonings to go through her phone though. She's been a little secretive for a couple months and it was playing on my mind and I thought the only way to ease these feelings was to go through her phone and check if anything fishy was going on. Anyways, I wasn't actually aware of this but she has Snapchat installed. I'm 32 and never used Snapchat in my life so admittedly I was confused on how to go about it and if there was anything I could actually find on here. After a short while, I did stumble across a guy who I won't name but she seemed to be in close contact with him. After reading through a couple chats, I scrolled up a little too far and found a nude photo of her saved in the chat log.

I haven't brought this up with her because I honestly didn't know how to go about it. So, instead of doing the right thing I blew off some steam by going to the club with friends and essentially drank my feelings away. I told my friends my situation to which they also agreed it sounded weird and that it's best to talk to her about it. Stupidly, I let my drunk thoughts get the better of me and instead of calling her, I called her best-friend asking if she knew anything about this guy that had been messaging my girlfriend. She told me she'd been told a little bit but that it was best if her and I spoke in person. My drunk state dismissed why she needed me to talk to her about in person about this but nonetheless I went anyways.

After what seemed like a conversation about my girlfriend going absolutely nowhere with her friend, she offered me if I wanted to stay the night with her and I said yes. I won't get into full detail but she offered if I wanted to share the bed with her and one thing lead to another and by morning came round we'd had sex multiple times in that one night.

I do regret it now typing this out as I do think I should've gone with my gut and spoke to my girlfriend about it in the first place but I didn't and there's nothing I can do about it now. Me and my girlfriend are still together whilst I'm writing this as I still haven't spoken to her about what I saw. Am I the asshole here?

EDIT: I seem to have gathered a few people who aren't happy with what I did. I didn't want to mention this as I'm not even sure myself if it counts as what I think it is. However, I wasn't aware we had sex until after waking up and seeing the multiple empty condom packets on the floor. My intentions were not to go over and have sex with her in an attempt at revenge, my intentions were to go and find out what she knew between my girlfriend and the guy she's been messaging as I stated earlier. I do not remember even consenting. However, I don't want that taken out of proportion as I was heavily under the influence and I may have consented but unfortunately I do not remember.