I pretty much agree with the above comments, don't rush into sex at all, i.e oral, hands, penetration. Stick with kissing and honestly, be a cock tease. Guys love it, but don't be a slut. Sex complicates things, instantly. You're going to feel attached and on an emotional roller coaster so unless you're completely ready for that sort of thing, take it extremely slow. If he likes you enough, he'll stay. If he doesn't, he's not worth your time or energy.
This is how I do it;

Flirting,
kiss kiss,
make-out,
touchy feely,
fingers/hands,
kiss kiss all over,
oral sexxorz,
more kiss kiss all over,
striiikeeee.