I have a friend who overstayed her visa she have a boyfriend but always insults her regarding her status .?

She came here as a student which has a right to work temporarily when her visa is about to expire her bf wants to marry her but she doesnt want to yet. So she filed an extension of stay it has been denied. What happened is she still continue to stay here now illegally, she told her bf when her bf found out he became distant and keep on telling her she just wanted a greencard. But in the first place there are guys wanted to marry her cos shes beautiful and she finished a degree here shes not poor way back in her home country but she broke her record cos she overstayed because of her bf. One day her w2 form came to his bf's haus cos when her contract was about to end at her workplace her bf changed her address to his's her bf is living with his parents so now her bf texted her this" your w2 form is here with me, they might think were harboring illegal immigrant" , i know what he means but he's her gf he shouldnt say those things to her. It hurt her feelings and she told the guy that if she was after a greencard she would have been married by now because she got offers from oher guys that like her, my friend is so depress and eventually her bf told her it was only a joke, idk what to advice her anymore, she dont listen cos shes inlove she dont evem wanna marry somebody else cos she respects her bf and she doesnt wanna do that for immigration purposes only. Im worried ab her its so hard to see her living like this she cant even find a stable job cos she dont have papers she finished a bachelors degree but all companys want an authorization to work. I feel sorry for her, please give some advice, should she just break up with him or wait for him to marry her. Thanks.