There's some more details I probably need to provide but I actually did put my "foot down" so to speak. However, this resulted in me coming off as insecure and jealous.
Basically, the gist is there's a 10 year age difference in her and I. She's 18 and has some friends left over from high school. I briefly met the group of guys one day as they were visiting her at her coffee shop job. When I walked in they acted as though they couldn't talk much to me and seemed a bit intimidated with me being much older and dating a girl within their peer group.
My girlfriend went over to a get together at one of the guy's parents house while I was at work on a Saturday recently which I had no problem with but when I got off I was heading back home and told her I had just off. She told me she had been drinking and needed to sober up for a bit. I asked if I could swing by and hang out, have a few beers, and chill. She said that the guy whose house they were at didn't like people swinging by. I said "but I'm your boyfriend" and she immediately texted back that I never let her hang out with her friends and that it's only "one Saturday". I knew I had probably shown some jealousy with the boyfriend comment so I just said "oh no, it's no worries, just sober up and be safe". She then said it was really more to do with his parents. I didn't
text her for the rest of the time and when she was coming home she gave me a call. This is where I should some insecurity and pressed her on why I couldn't have just come to hang out especially with my girlfriend drunk around a bunch of dudes. She said she wasn't the only girl there and that she doesn't understand why I'd be so worried. She said that the real reason the guy didn't come by was because I was "too old" and would be hard for all the younger friends to relate to. I asked if she vouched for me and she said yes. We continued to argue about it and I finally calmed down and said for her to forget about it, and that I was just a little concerned not because I don't trust her but that I can't trust a bunch of guys I haven't gotten to know to be around my drunk girlfriend.
However, since this event she has been bringing up the guys a lot and specifically the guy whose house they were at. She says nothing but positive things about him.
Yesterday, I was driving home from work and gave her a call. I was telling her I was gonna go for a walk and asked what she was up to. She said she was hanging out and I asked where and she paused and then said the guys house with the other guys. She asked if I wanted her to come walk with me and I said that she'd be welcomed to but that there was no pressure. She said it was too far to drive and that maybe tomorrow she'd walk with me. I said that's fine and hung up.
After that conversation I felt I really might be about to get dumped by her so I felt the only thing I could do was employ some dread game and not text, call, or snap chat her until she does.
I went on my walk. Didn't look at my phone for two hours and saw 3 texts, a snapchat, and a phone call from her. In these messages initially she said that she was just too tired to walk tonight and was just going to go home after she left the guys house. However, since I didn't reply for an hour she called me when she was leaving. When I didn't answer and hadn't opened her snap I think she got nervous I was pissed so she tried calling me. When I didn't answer she sent me a text that she was just trying to call me and see if everything was alright. When I finally called her I said sorry I left my phone in my truck I had just got done with my walk. She proceeded to ask me where I went for my walk and where I was at the moment. She seemed worried and then asked if I'd be willing to meet up for a late dinner. I said sure and she was extremely nice to me the whole time.
Sorry for the ramble but those are the rest of needed details to better understand the premise.