Wait a second.....


Dont you normally write in red font?

All joking aside, You definitely are not obligated to said douchebag in this situation. You told him you were engaged, and you came with friends. That right there should have been a stop sign for a guy just looking to score some for the night. Although the gesture of someone buying you a drink is nice, it should by no means make a woman feel obligated to give something in return. You should have threw it on him and said "Fine, have it back" haha thats what my fiance would have most likely done to that jacka$$