Should I (M/20) leave my girlfriend (F/21) for breaking the boundaries I had set multiple times?

I have adhd so my story telling skills may be trash BUT, me and my girlfriend have been together 4 months(off and on for 2 years). Around the 2 month mark I went through her phone and seen her telling another man she was single and yes they have history. the message were from around the 1.2 month mark so I was finding out about these about 22 days later. In which she had already ended anything between, essentially breaking whatever it was off. After finding out about this we fussed and fight all day and I ultimately end up staying(shoulda left).

As a result of this event I had 1 singular boundary and that was until I could regain trust for her again I didn’t want her hanging out with any men 1 on 1 cs it made me uncomfortable thinking about what could possibly be happening behind closed doors. At this time she was already hanging out with her only male friend pretty often when this was set. (FYI I’ve met him and I highly doubt she’d do anything with that man) but idc I’m not trusting anything. In the following days and week I precede to find messages in her phone clearly stating that the too have hung out with each other multiple times and every time that I’ve seen these messages we have a conversation about it and it basically consists of me reiterating my boundaries and her at first making an excuse for why she did it then just apologizing. On time number 3 I said if we have to have this talk again I’d end it, and here We are on time number 4

I confront her about it and her excuse was because she was hurting and needed to vent… she already talked to mee and 2 of her female friends about it over the phone but want him to pull up and smoke so that she could vent to him, told her that’s not excuse even if your hurting, things get heated on her end and she hangs up in my face and even after all that jm finding it hard to stand on my word because yes I do love her soo soo much but shes shown me time and time again that she doesnt respect anything I say (other incidents as well) outside of allll this the relationship is fine it’s just this one issue that keeps happening

so im honestly over it but again i just can’t come up with a conclusion cause leaving would definitely be beneficial to me and my journey through life also standing on my own words but im just so attached to this woman that it clouds my mind leaving me in a middle ground mannn idk what to do someone help!!