Hi navygirl
BLR & Carl make some very good points.
It sounds as if you love your current boyfriend, but are not in love with him.
Yes, if you break up it will be a big thing, but is it fair on either of you to pretend that you are in love with him, if you are not?
The people who count here are those involved ~ so, though I understand your concerns about friends & family, what they think isn't really the issue.
Be fair on your boyfriend. Don't cheat. Be honest.
Perhaps take some time out from relationships, altogether, to give yourself time & space to evaluate the situation.
I hope that it will work out well for all involved. Good luck
