you don't. trust me, been there. if he's a great guy (friend) then you're better off strengthening your friendship till your older (18 at least). if you don't know him much more than an aquaintance then you might get more than you bargained for. Plus if he's nice to you because he looks at you like "a little sister" then that's an embarrassment you probably don't want. If he is interested then maybe he's standing off because he knows it's wrong to act on those feelings with some one so young. Putting him in that position (he may regret it) isn't fair to him is it? If he really does want to get with you and doesn't care about morals or maturity, then he's not such a great guy under that nice exterior. I don't know him or you, but i'm 24, divorced with two kids and have been in almost every situation, trust me. I dated a guy 8 years older than me and as i grew up i realized how immature he was. i also lost my virginity very early and now wish i would of waited awhile. you never know who you'll be in the future. so please, try to keep your past something you'll never have to regret.