talk to her first, see if you both can come up with a solution that works for the both of you, even if it aint perfect. be honest aboout your feelings and your stress. itll help out a bit. and if things still dont go well, and if thing continue, its entirely up to you what you wanna do next. but not saying something will only harm the both of you. if things are really bad and you cant work things through, nothing wrong with breaking up.
