This girl told me she had experience and had sex with a couple guys..then it turns out that her ex bf didn't get it all the way in her''because it hurt her too bad''.This girl always seems to get uncomfortable whenever I make sexual jokes with her and just kid..even though she says she likes me?

WTf

First, go listen to "The Jack" by AC/DC somehow. Listen to the lyrics and try to discern how they might apply to you. Then come back here and we'll see what we can do.

so don't make jokes of a sexual nature with her?

where's the problem?

and if she's had problems with pain then you need to be extra careful,slow and understanding....lots of lube and stretching.

Just to reiterate....

-She likely just hasn't reached that sort of sexual maturity yet; that is, that which can handle, laugh at and even throw out sexual jokes and such. It's called "being prudish", and it's normal at one stage or another in a human's life. Don't try to force or rush her into it; just be understanding and knock off the jokes for now. She'll come around.

-To help her achieve said "stretchiness" and such, and other things, somehow try to gently suggest that she masturbate a little more. It'll help preheat her vulva for a lifetime of cocktearings and it'll perhaps also help her become less-shy, whether simply because she's discussing it openly with you or because she's masturbating while you watch (if and only if she's ready). Either way, she'll become more and more-accustomed.

Just give her time and be a man for her if you want her to be a woman for you.