So I've been in relationship with my boyfriend for over 2 years now and we've been friends for over 6 years. He's 6 years(27) older than me(21) and is still a virgin, I'm not, I've been sexually involved both males and females.

Things are serious between us and we plan on getting married next year. We haven't had sex since we started dating and sometime I think about the fact that I'm going to commit to a lifelong relationship with him and I worry his inexperience might translate to dissatisfaction for me and I wonder what I should do.

Am I just worrying about something irrelevant(I mean people say sex is pretty important for your marriage) or this something to be genuinely concerned about?