What should i do to make this girl like me again?

well let me let u people know a little bit about myself..

well i used to be in a lot of relationships.. most of em not being serious at all , i met this girl in school and we used to go to the same french class and all that so we used to talk a lot i thought she liked me but i was too scared to approach her as she is literally like an angel , so i didnt mind and i moved on to some other random chick, and i used to treat the girl as a friend and i think when i told her i was dating someone else i think she had lost her feelings for me and we hadnt spoken for a long time but now since like February 16 or so ive really got feelings for this girl but what i've dont wrong is ive only treaten her like a friend ... the kind of friend u tell all your relationships about and who u slept with or till which *base* uve gone to ... and not even if i am goin all out and telling her how i feel about her she doesnt believe me , what ever i say and i mean whatever she just doesnt believe, i even went to her house at 12 mid night to give her a cake for her birthday but she rejected as she would have problems at home , well maybe that is just a excuse or maybe she didnt want to take it , i frankly dont know but i want to believe she would of got into trouble .. but i highly believe she just didnt want to take it ,,, well anyways all of this birthday stuff happened quite recently and like 5 days ago i spoke to her friend and was like what was wrong and all ,, after all the speaking she was like * the girl i like * has a crush on someone , iwas like ';she used to have a crush on me too and she got over it .. do you think she can get over him'; she was like ';yea'; and i asked her since when and she was like just like a week before u told her u were in love with her ( yea i know FML i wish i was a little early ) ... ive tried almost everything i know of , who ever ive asked help suggests to me things ive already done ,, i really need help on this ,, i am truly in love and i can even go till marriage with this girl... any love guru's out there ? please help.. im happy you have read all of the above



note : if any female's answer this can they let me know what would of been going through they're mind if they were in that girls shoes and a guy would of done all thisWhat should i do to make this girl like me again?
Well Like If I Were You Break Up With The Other Girl And Talk To The Girl You Like And Make Her Feel Special Ask Her Did You Get Your Hair Done It Looks Really Nice To Day ?

If She Doesn't Wear Make Up In Say You Look Lovely Today

Smile At Her Every Time You See Her

If You Are Any Where Like On Holidays Bring Her Back Some Thing Pretty And Nice And Say I Seen This And Just Taught Of You Some Thing Small Like A Necklace Or Bracelet Or Ring

Just Make Her Feel Special And Wanted