Do i really like her

Is it normal that when i masturbate the person i think of is a friend of mine that i havent seen in a while(but talk to on facebook every once in a while (been a while though). i guess i have a crush on her even though i havent seen her in a while, she is awsome and i would like to ask her out(never have b4 for any girl) but i feel like i made myself like her, what happened was that i was friends with her (no atraction other than as a friend but shes not ugly at all)had a crush on some other girl and when i got over her(she turned out to be kind off bitch) and i wanted to masturbate and couldnt think of anyoone i liked so i saw her and i guess i thought wth and started thinking of her like that but then i started being atracted to her (not only how she looks but what kind of person she is which im really atracted to now) i feal like i realized how great she actually was, i think shes cute now though, she seemed to get cuter as she got older, so i really feel bad about this and if i did ask her out i couldnt unless i told her to but i think that would b the worst thing you could say to someone,i cant look at her pics without feeling like i like her,do i like her or am i just obsessing is there anyone else who has this problem, an advice please help, she is really awsom and i would h8 to hurt her if anything did hapen between us, please give helpful coments i really need advice if your gonna call me an ass or something go ahead just tell me something healpfull to(20 male)