My boyfriend wants to get married?

so we been together since i was 14 and he was 19. now i am 23 and well yes i love him and things been great for us, some ups and downs but overall good. but i just.. i can't marry him because well my dad got this in my head, i've never been a teenager. i've never been to a disco, never been to a teenager party, never been drunk, never flirted, (i met him in debate team thts how nerdy we are, i was afreshman he was a senior) so the thing is... i'm scared of spending my whole life with him and never knowing what is like to wake up who knws were with a tattoo and smelling like rum, next to some hot guy lol well thts just an example of how i feel, i havent experienced enough, he's my first and only bf and this isnt bragging, i just think its important, there are some guys interested in a relationship with me and.. flirting seems like fun. i never even considered it before, idk why now, am i bored? do i not like him?, idk what to tell him, i kinda want to ask him to break up and be friends, for a while, but just the idea of tht is stupid "hey hun, i' need a break" WTF. well the thing is i love him, i'm just afraid i mught get bored later on, time has flied by with him, but i mean, living my whole life with him is something else... what should i do? by the way, we both finished college already