When having sex, I think about...

I'd hate to think that you know what love is at the age of sixteen, and because your fantasizing about other men says it may not be love. Are you insecure? how old is your fiancee? Don't be in a hurry to love, and especially marriage. Take some time...If love is real...won't fade away......OR YOU CAN TRY ROLE PLAYING AN INCLUDE HIM IN.. Good luck with ya.