Is being in love with an online Friend wrong?

So Anyway I was Great Friends with this girl on Myspace chat rooms for years me and her would talk all night, play games ,we flirted a few times, chatting about stuff , listened to each others music and so on. She's from Fremont America and i live in the U.K so a Big Pond apart lol....anyway i didn’t think of her more than a freind until i looked on her profile and saw her Poems she writes, the help she gives people , shes kind to people , we both believe in faith , and she’s very sexy lol i just couldn’t help but grow feelings for her , Im sure deep down at the time she did too she said we should keep our feelings to ourselves , but through the silly fights we had about other girls its her i'd wanna spend time with , I wish me and her can do stuff what friends do like go bowling...fishing...cinema all them things..and shes had a rough time of it in her life Losing her mother and other things i want to be their for her ...my problem is i act a jerk alot of the time like im this big kid ive lost loads of people coz of it even family and had a gf who cheated on me and i didnt think id find someone again, but this girl has changed me Im more mature or trying becuase she always beleived in me. but now years later she has BF and he's told me to stay away from her and sounds like his controling her making her decisions. I dont know what to do Iv'e always stuck by her i dont want to loose her main thing is i want to be her freind what should i Do?