Is it normal for this

Ok so I'm 22 years old, and a bit confused on myself. I've been dating this girl for almost a year now and I must say she is the love of my life, she's my miss amazing. We have been friends for about 6 years, and before she knew everything there is about me. But I can't pull myself to be completely comfortable sexually. I'm bi sexual and my whole life all I've even been with were males, but sence the day I meet this girl I knew I would end up with her in the long run. We got together sooner then I had expected and maybe I just can't take it all in yet. I find myself getting angry with her often, not even for things she can control. I want to give her all of me but for some reason I feel like I can't. Now I'm a little on the heavier side
And have some body hair that I've never been comforterable with. I sorta feel the need that one must impress a girl more so then a guy. Now I want to be with this woman more then anything but I want to have sex with men. I masturbate daily, and over my relationship have only had sex with this woman 8 times. She wants me to be more active and "want"her, but it seems impossible for me. Is it because of my own self conciesousness? Can I do something about it?