I'm just curious what people think. You DON'T have to have a universal answer. You don't have to factor in your friends or what other people do. Different strokes for different folks. Just answer for yourself. So, for example, if you only date people you foresee spending the rest of your life with, he is right... if your boyfriends / girlfriends are sometimes people you know you won't marry, or you don't think of the future, he is wrong.