OP, you care WAY more about this woman than you are admitting to yourself. That can be a dangerous place to operate from. Time to tell yourself the truth and regain your center.
Have to ask yourself how much does she care about you?
It appears that she likes to use him for booty calls, at her whim, when she's horny, and that's it. To me, he seems to be chasing the dream of someday being upgraded, to the boyfriend that she loves, adores and values. That's actually happening for him is as likely as woman who is also used strictly for booty calls, someday becoming the man's gf/wife.
The only hope the woman would have in that scenario is to stop being a booty call, live her life and force him to operate out of a window of respect and value.
The fact that she still has sex with you whilst she is/was still with her boyfriend, should tell you enough about her character.
She likes that system. I knew a female who would have a boyfriend, he would get all into her, gain some weight and she would "kill" him, so he'd be focus on her and she'd be allowing others in a higher regard than him. She did it on a few men. I don't put my nose down at the men, though they should've known better. But I take it as part of her character. If you get too close, she will mess you up.
So her BF cheats and so what do you think she wants to do for revenge? She f*cks you because it makes her feel better about herself that she is desirable and it doesn't matter that he's cheating because she can do the same back to him.
