Hmm yeah, this could possibly work, but does “Sal” deserve her giving more of her than she already does? Does she even have the energy to give more than she already is? Just because they are in a relationship doesn’t mean that she is really happy. It sounds as if he is pretty hard-headed and wouldn’t want to contribute to chores more than he would if he was single no matter how much O.P. tries to talk to him. She mentioned he is work-involved and that he throws “you lived here for two years free,” so it sounds like he is more of the bread winner in the relationship. I’m not sure about her work situation, but what if she doesn’t feel secure enough to leave? Apparently her bf also said “I’ll show you what it’s like to be single”, so it kind of sounds like he’s an asshole. There’s a lot of variables that surround just him contributing more with chores, but if O.P. loves “Sal” enough then being even more selfless as you said could be fruitful. If he doesn’t change or is more affectionate towards her then I say she should leave.