How to deal with the cost of traveling with my boyfriend and mother? Because I just quit my job and stayed at home, damn it

You need to talk to your boyfriend about this. You are looking at his face, not his mother's. It is enough for him to be ungrateful. As for his mother, let him decide whether to speak or not. There is no need to force him. In this case, you can plan ahead, but let the other party participate in choosing the itinerary, so that the other party will naturally understand the cost.