Why does it hurt when we have sex?

ok well me and my girlfriend have been going out for 3 years and well we have done everything we started having sex 2 years ago but we only had it once we both thought that we where to young and stupid fr doing it so we havent done it since we have tryd...

now many times but I cant seem to fit it in now. I mean I finger her and she says she like it it doesnt hurt but when we try to have sex I cant even get my head in befor it starts to hurt her. and I feel horrible after because I think I hurt her so w ehave had sex once icant fit my penis in her now we want to have sex but it hurts her to bad what do we do???

ok so you must make sure she is wet and relaxed or else your not gonna get anything in

Yeah use lots of lubrication, go slow, and make her feel more at ease. =)

foreplay! - lots of it... to get her relaxed and in the mood lol lots of making out, touching, a bit of fingering, and perhaps (if she's comfortable) you can go down on her, and until she's ready and wet, that's when you can do your love making! - however if she isn't wet enough... use lube!! take it slow and don't rush it, and just continue to talk dirty/sweet to her. most of all...don't forget to do it safe! - at least two contraceptives! (pill, spermicide, condom...est.) all in all... your girlfriend is a lucky girl to have such a understanding boyfriend!

lubrication is a big thing but its gunna hurt almost no matter what if she's so small, but after a few times she'll loosten up and it'll feel good. but for the times it hurts go slow like everyones said

it hurt like F*CK of me the first like 3 times.
it will probable be the same for her.
but after that it will loosen up and not hurt.
and dont feel bad.

oh and go slow till it loosens up.
and your girlfriend is really luck to have such a sweet boyfriend.
I wish mine had been like this.

It hurts me everytime it first goes in then after a few thrusts it's gone.