I have confusing feelings about my friend?

So I've been friends with this girl for awhile, about 9 months and we are very good friends. Ever since October we've got pretty close and hang out a lot but our relationship has never been based around feelings or sex. We just hang out as good friends, no feelings for each other and have never done anything sexual. Recently we've been hanging out more and more and for some reason I've started to develop feelings for her. She thinks I am a really grey guy and I think she is the most wonderful person in the world. I've always been very attracted to her but I never had feeling for her or intentions to pursue her until last weekend. We hung out all weekend and even cuddled on my couch for a little bit! (lucky for me! Lol) Even though I kinda like her, it's not how I like other girls. And even though she is incredibly hot I'm not exactly sexually attracted to her, but Im just so fond of her and think she is so amazing that I somehow caught feelings. I've never felt this way. Why am I feeling like this and what should I do?