It depends I am 14 too and it is pretty weird. A lot of my friends they go out with guys all the time and every time they are all omg I love him I never want to leave him he is my life all dramatic like but really when they get down to breaking up in a couple days they find a new guy and they are the new love of their life. Also something that might hit is if you haven't had a whole lot of serious boyfriends and this one is your first serious relationship and if it isn't and you are truly in love try and see if he feels the same way!