I can't tell the difference between?

i can't tell the difference between my friend liking me more than a friend or just a friend obviously i don't want to spoil the friendship. but one problem is she is kind of tomboyish in personality gets a long with a lot of guys but is not a whore about it. difference with me and my friend is with me i have her number they don't email some do my close friends she flirts with me some times with out me even starting it. we talk every day spend time alone before my friends come along she asked me too i didn't want to feel like a stalker there is a bit of favoritism with me i don't have many female friends so i don't know they either fall for me and i go out with them or they fall for me and i am not interested.