I don't want to have ** with you
I don't want to have ** with you because it will be my first time and not yours. Your too much of a man-** for me to trust you with my virginity and my trust. I want to preserve my virginity so that I will only sleep with a couple of people. But I don't feel a future with you because of this aspect. I can't tell you this real reason because I'm ashamed and I really do think highly of you and our hopefully everylasting relationship. But I always thought my first time would he his first time too. I know I will be self conscious and I don't want to come across as a different person when we're more physical.
Take up masturbation.
It does the soul good.