I (23M) haven’t been able to shake something my girlfriend (23F) did at a party a few months ago, and I don’t know how to bring it up.

It happened a few months ago, at a St patty’s Day party i wasn’t present for. She and I have been dating for a little over a year. My girlfriend (let’s call her Jenny) tells me that this party, she briefly interacted with a guy (let’s call him Dwight), a guy who I used to be really close friends with. It was a party and sometimes you get stuck in interactions, so I didn’t really mind it, until she told me that Dwight had been telling people that she was flirting with him.

I was initially uncomfortably and weirded out by it, but I decided to ignore it. My girlfriend is very outgoing, friendly and easy to have a conversation with so I assumed that Dwight simply saw a pretty girl talking to him and assumed she was flirting.

I asked if her if she had let Dwight now that she was my girlfriend. She said she didn’t say anything to him specifically, but was raving about me to other people. Since me and Dwight have a complicated history, I assumed Jenny didn’t say anything so she wouldn’t make the interaction weird. I thought it was strange but i have felt very loved and appreciated by my girlfriend and since this was such an ambiguous “he said, she said” type thing, I decided to ignore it and move on. I didn’t want this guy to get my head.

A couple of weeks later I find out that Dwight has kept telling the story. It got back to my girlfriend and she was really upset about it. I kept assuming that he was just sniffing his own farts, telling the story to feed his own ego.

Last week, I was hanging out with a close friend of mine who’s also friends with Dwight. The situation came up and I sort of explained it, but this friend told me that Dwight was still telling the story, but not in the bragging fashion i had imagined. My friend told that the way Dwight had told it was that Jenny and him were having an innocuous conversation. Jenny then complemented his tattoos and started touching them. His tattoos are near his forearm. Dwight felt uncomfortable by the interaction and left the party shortly after. As a guy who also has tattoos, touching tattoos is a very deliberate thing to do and I don’t think I’ve ever seen it in a nonflirtatious way.

Ever since I found out about that, i’ve had a sick feeling in my stomach that comes and goes. It’s been making me rethink everything in my relationship. The fact that she didn’t mention me and the fact that she might’ve touched his tattoos is really fucking with me. And the fact she never said that is also really bothering me and getting me sad. It paints a really bad picture of her, which I haven’t seen hints of at all in our time together. It’s also the fact that it’s Dwight specifically. A dude who I had a really close friendship that eventually fell apart horribly.

It’s been a week since I found out this info. And I’ve been a bit of a wreck. I haven’t been able to bring it up, as I’ve been helping her move to a new apartment and we celebrated her birthday, but throughout these two things, I’ve just completely felt like shit. My girlfriend flirting with my former best friend is honestly a nightmare scenario. I feel like someone is fucking with me. What should I do? Should I talk to her about it? Or do i just see the writing on the wall and end it?

TL;DR: My girlfriend touched a guy’s tattoos at a party and didn’t tell me. The guy is someone I don’t like and she knows it. It feels sneaky and I can’t stop spiraling. Wondering if i’m overreacting and what i should do.