My friends say I'm in love with her?

Well I think you definitely love her, but you're not IN love with her. There's a difference. When you're IN love with someone, you can't stop thinking about them, you'd do anything to make them happy, etc. and generally you are sexually attracted to them. When you love someone, it's just like you can talk about anything and everything with them, you enjoy spending time with them, etc. You love her...but as a friend. And trust me, that's a good thing (: