Search Results: why tell a girl you will talk to her

We got into a bad argument a couple months ago after a weird period of us being really distant from each other, and he admitted to being so frustrated he thought about hitting up other girls, but never did. And since then he's been talking to this girl he knows 24/7. I'm not exaggerating when I say there is a notification that she messaged him every time I get a glimpse of his phone. But whenever I told him about how uncomfortable it made me he told me I was being selfish and paranoid and that she needed help because she's struggling with all these different problems and so on, and would continue texting her constantly. I had kept noticing the past two months or so, whenever he'd hand me his phone for whatever reason he'd always delete their DMs before handing it to me. And last night I had finally had enough of that and called him out. I was more mad that he thought I was actually stupid enough not to notice him do that so often then I was about him talking to her. And he kept listing excuse after excuse and kept saying he wasn't lying since they weren't doing anything and I have no reason to be mad and blah blah blah. But he is STILL talking to this chick non stop. And it really bothers me that he uses him knowing her from school (for less of a time than I knew him) as an excuse and will completely ignore my discomfort. I understand he's gonna have female friends and talk to them, I have male friends. But I don't understand why I'm in the wrong for being uncomfortable with him repeatedly crossing the boundaries of my comfort. He claims I'm violating his free will but I'm not asking him to drop communication entirely. I just want him to be mindful of how I feel and take that into consideration before going out of his way to start a conversation every day.

I have already met my soulmate who i can never be together with and we aren't in contact anymore. He helped me and i helped him and our roles in each other's lives are over. So i don't have to worry about "the one"
The biggest deal breaker in a relationship for me is cheating and i have always advised a break up if your SO cheats. Cheating is the same reason why i am scared to be in a relationship too. It seems that many people here and irl supports cheating too. I had a guy tell me he will pour sulphuric acid on to my face because i asked a girl to break up with her cheating boyfriend. I know a female user here who everyone compliments on how she's such a submissive good girlfriend while she's flirting and sexting her guy friend. Even some of my friends in committed relations talk about new crushes and flirting with hot losers.(They say it's for fun)
Whenever i express my hatred towards cheating, people ask "Did you get cheated on or something?". Obviously i did not. But i feel like what they're saying is i don't have the right to be upset about cheating.
Anyway i got a player guy who have always wanted to "date" me since i am not easy and i am 99.9% sure he will cheat. So if i date him and when he cheats, i may finally be able to get rid of my fear. Once i become immune, i believe that i won't be always thinking if my future SO (someone i love) is cheating and even if he is, I would be used to it.
You would feel like i am being a hypocrite rn so i will stop expressing my anger towards cheating and such questions from this moment onwards. And yes i am alright being a miserable girl who would probably be pitied on (Ik i need help🤷‍♀️).