Background: 25 year-old, recently out of the military, now doing government contracting work. Good job, own place, etc.

I started dating this girl (22 year-old) two and a half months ago who I initially met on Tinder over a year ago. We matched over a year ago and never met up (I got deployed), she went radio silent on me and apparently it's because she met another guy on Tinder and moved to another state with him. Long story short, she came back to my state two-ish months ago and hit me up and ever since then we've been dating. I know, I'm stupid as fuck.

In general I think she's a good girl, at least I keep telling myself she is. She's hot, that's pretty much it. She disclosed to me that she's slept with over 80 guys, and has all of their names in a note document. She "used" to do OnlyFans, premium Snapchat, etc. Honestly, this all fucks with me because never in a million years could have foreseen myself getting myself locked down by someone like her.

The reasons I'm typing this post and the things about her that bother me are that she constantly talks about her ex, I mean almost every day, to the point where I know his name. She hasn't deleted any of their pictures together off of social media and never really talks about me on there at all, like I don't exist. The 80+ guys thing at first didn't get to me, but now it fucks with me. She still had her premium Snapchat after we became "official" and while we were drinking at my place she showed me a video of a guy stroking his dick to one of her pictures... she showed *me* that, and thought it was okay. I told her it was fucked up and she starting arguing with me about it. She told me that, "all the other guys I've dated never had a problem with it." She stays up all night and sleeps all day, which fucks with me because quite frankly it's just lazy. I will literally be getting off work at 3/4 pm and she'll text me "good morning". She has a job, but it doesn't pay well to be honest, and she still lives with her parents. She told me she's the kind of girl who just moves in with guys that she dates and I know she's planning on keeping up that same trend with me. She doesn't listen to me when I tell her to stop behaviors that bother me. She messes up my place and doesn't even bother cleaning up after herself. She ends up sleeping the entire day the next day after hanging out the previous night, in my bed, and all I want is for her to leave. I shouldn't feel that way about a girlfriend.

We're supposed to go on a trip to another state together in a couple of weeks and I told her to pay for her half, and she's only sent me half of that thus far. I'm not sure if she plans on sending the rest of her fair share, but with how much she makes I'm sure it isn't the best for her financially.

I've tried breaking up with her twice now, but for whatever reason she always calls me afterwards and before I know it she's back at my place, I just can't seem to stand my fucking ground. It is actually starting to fuck with me. I've been skipping the gym, haven't been studying for my next IT certification, and I end up just forking over all my money for food and shit. I know I'm fucking up, but I just can't direct myself.

Instead of girlfriend I feel like I'm a single dad of a bratty child.

Bros, any guidance here?