Just for some side info: 6'2 210 pounds. I get told by women I am an 8-9/10. I am in a fraternity. Been with 60 girls.

I am not gonna lie I have treated this girl like shit. Broke up with her and while we were working on things I fucked a bunch of girls. Problem is I tell her I love her and shes the only girl I want. This time she was really hesitant, but after i begged for her back she agreed to try it one last time. She is just worried that i might fuck other girls again or just leave (whenever she would piss me off I would just kick her out of my apartment or leave hers) I know I fucked up and I feel terrible for hurting her. I have oneitis badly and I dont give a fuck. This girl is literal wife material. Conservative as fuck. Does everything I say. I never thought I would be able to control someone so much (sorry for sounding so psychotic) but i am confused as to why even when i am weak and beg for her back she caves in. Thoughts?