Well you don't really want to convince her to have sex with you. The first time I had sex was because she wanted to. Just don't provoke sex a lot because she might think that you are a pig just wanting to get in her pants.
To have sex, or have a good relationship with makignlove and pleasure involved? For a proper relationship to last, sexual practices must be preceded by much love, caring, and trust. And in some cases, blood tests. Oh, and don't forget to let her know that you are intrerested in safe sex with contraceptives, cause you better be!
I'm thinking that if you have to convince her to have sex with you then she doesn't actually want to in the first place or she already would have. Don't be a jerk and try to force it on her or cajole her into it...let her do as she pleases and if that doesn't please you then hit the road jack.
um.. convince.. its not like that man. no convincing about it, a womans decided in 15 minutes of meeting you whether or not shes going to fuck 'ya. Dont make it so complicated, its not. Look for a girl who's giving you visual clues, look around, you can find one... from there its all finesse, don't fuck it up. Getting girls to sleep with you is a skill, finessing them is an art, and can take a life time to master. Don't be afraid to get shot down a few dozen times before you get anywhere. :H
Sex is a natural part of a loving relationship. Try loving, caring and romancing her and the sex will follow when she loves you and wants you in the most intimate way possible.