So im 6'1, 330lbs (down from 400 and still losing), Im lifting and going to the gym because I realised im more of a bitch because im fat. Its because being fat with moobs and just unattractive makes me less confident and have more self esteem issues. I recently broke up with a girl ive been with because I found out she was deceptive and used me as a tampon because I was "nice" and "perfect", yet she treated me like shit and thought by giving me ass it was ok. a bit of background, she was a ten, perfect body, an ok face and i only managed to get her because while hitting the gym I got really confident even though I was nowhere near my goal. She liked that confidence in me and thus started going out, I then started going back to being a beta bitch, I fell in love, told her how shes soo out of my league, big mistake. Anyway, only when im a complete asshole to her like I was when trying to break up did she start acting all loving and wanting me even more. But I knew as long as I was fat and my beta kept lurking out occasionally I would never have her full respect and she will end up treating me like shit. So is this all in my head? Can I be an alpha while still being fat? or do I need to forget about acting all confident and work on my body first before getting into any relationship that will make me happy?

EDIT: tl;dr, can you be fat and alpha?