It depends on if he had money or not. If he had a shit load of money and just didnt do it, id be pissed as hell. But no i dont think i would break up with him. But i buy the boyfriend i have now a lot of gifts. And he doesnt buy me anything, but he doesnt have the money too, and im okay with that. To me a hand written song by him is better than any gift.
Would you ever tell your mom if you saw your father kissing another girl?