I m feeling confused...i m stil so young yet i m goin out wit this guy nd we have a serious relationship.?

we've been goin out together for 5 months now and d relationship seems 2 b really serious. i m stil 17 and i feel a bit restricted. i miss going out and meeting new people and fooling around with my mates. yet if i dump my boyfriend i m afriad tat i miss him cos i tink im in love. help pls