Please answer!! i need your advice about this girl and this long situation (please read it)?

Ok so this might be long but please read it all and answer :( ok so i met this amazing girl when i was 6 (That was a longggg time ago) and we use to play kissy catch ';when we were like 6-10'; and she wud stay still for me to catch her and all that but we never actually kissed :S, we were really close but one day i asked her out at a dance ';it was only a little one and we were only 10'; but she didnt trust me cos i was hanging out with all these people who asked girls out and then just left them standin ';they later became chavs and smackheads'; and 6 days back i asked her why she said no and she said she thought i was lieing and was thinking (why is he messin me around like this cos she wasnt really that fit but i still liked her) so we kept on hanging around like we normally did after school and by the time i was 11 my mum moved so we didn't see eachother for four years and we just got back in contact 2 months back and we been talkin on msn and that (i found her on facebook) and we met somewere bout 3 weeks back and i personally had a great time it was in the same spot we use to always hang around when we were younger but i learned alot about her like her dad's mate was a peado and use to slip his tounge down her throat from when she was like 8 or maybe younger and it only stopped like 6 months back when her dad found out and the whole thing sent her into depresion and she started hurting herself but stopped when people started noticein marks on her skin in p,e and also she was gettin bullied back when me and her use to be younger and i only found out last month about both of these things otherwise i would of done something ';well anything i cud of done'; but i feel so bad about it cos i never noticed it and she was tellin me how she had to sit on her own nearly every lesson and how they would say things like ';we all know you fancy john (me) but he doesnt even like you he tells us he thinks your a fat slut'; and it just makes me feel worser cos they used my name against her and i really cared for her, and during the time we was apart and not in contact she dated this person but because she wasnt a slut she didn't want to shag him so he threatened her with weapons and raped her and im upset cos i couldnt be there for her or help her so i promised i wouldnt let anyone hurt her ever again (and she blushed) and i think i really like her and always have but theres a problem she is going out with this person and they been going out for almost a year now ';i know who it is i use to go to his school'; and im not sure what to do :( they get off with eachother all the time they barely ever talk and the person she is going out with is a prick because he only got with her cos she (the girl i like) has gotten way more beautiful then she use to be and back then he never interacted or even talked to her at all and i really dont like him cos he gets a bunch of his mates together to play strip poker and she is the only girl there so i think he is disgusting for playin stripoker with his gf and loads of his mates but she says she loves him which really hurts me cause i think i might love her so what would you do in my situation (thanks for readin it i know it was long) (oh and if it helps me and her flirt sometimes but i dont think she (or anyone) actually take flirtin seriously)Please answer!! i need your advice about this girl and this long situation (please read it)?
I can see that you care about her and want to protect her.


I agree with you, her boyfriend seems like a jerk. But, she says she loves him and that's the way it is. Don't try to get in between the two of them. She's not single and she's been with this guy for a year so she obviously cares.Please answer!! i need your advice about this girl and this long situation (please read it)?
wow thats really compilcated but IDK you should just be friends with her for now I dont think her and her boyfriend will be together for ever. plus if they get in a fight and if she trust you she might ask for advice and you be like dump him he doesnt desevere you