16 year old girl in love?

Carla
I'm 16 and I'm "in love" with a guy. I really feel like I love him.(I say it in quotations because) I have a friend a dude. And we were talking about my relationship with my bf. And he told that a 16 year old girl can not be in love. Because she(me) is too young for feeling "love" and what I'm feeling it's just something that is transient. I want to show this guy that he is wrong. I just want opinions what do you girls think?has that happen to u?