To be perfectly honest, I wouldn't believe you either. EVERY father thinks that all boys want sex from their daughters and try to protect "their babies".
My girlfriends dad thinks i want sex? But I don't and he hates me for no apparent reason. I'm 16 by the way. What should I say to him. I told him I don't. And he doesn't believe me.
Of course he doesn't believe you! You're 16! It matters not what you say to him, he won't believe you.....that's HIS daughter! She's daddy's little girl and he's just protecting her!
I agree with everything that's been said. I would also have my suspicion towards a kid dressed in Abercrombie and Hollister that wears sunglasses indoors. But we already spoke about that =D
Doesn't really make a good first impression. "Oh, the guy my daughter hangs out with looks like some douchey punk." Kind of like those dudes you see on MTV during spring break.
What I would do is.....
I wouldn't believe a 16 year old boy if he told me he didn't want sex either. What you say is that it doesn't matter what you want. You have enough respect for his daughter and him, that it is not something you will pursuing with his daughter.