Celeberites being attractive

My boyfriend said that if a celebrity asked him out, he would leave me for them... I know the likely of that happening is rare, but it made me mad that he said that. Am I overreacting?
EDIT
Talked to him about it. He said that he was being serious and that I'm nothing compared to them. He said that even if he saw a girl that looked like a celebrity he would leave me for them............ His reason was because he thought it was common sense