How to tell if someone likes you more than a friend.

Hey all... I was wondering how to tell if someone likes you more than a friend, Or if they have a crush/love you. Cause I have been close friends with someone for about a year and a half and... Like half the time she seems to be a friend and the other...

half flirty and joking and such.

Well, or course I'm a girl, so I can give you some hints;
When I like someone, I am sometimes a little mean to them, or I talk to them a lot. I sometimes look at them too, randomly, and just smile(I know that sounds weird haha). And I'll like always agree to what they say(not meaning EVERYTHING).
Not sure if that really helps, but I tried haha.

it depends on the girll..like with me, im really shy and ill look at you and smile haha, but not talk a lot, and I definitely like it when the guy makes the first move. makes it much easier for me :]

hmm.. well im a girl obvs and when I like a guy I tend to just look at them and then if they look back at me I look away as quickly as I can. I flirt, joke and sometimes take the mick out of them (but not being horrible just like jokingly). I also tend to like keep in bodily contact with them (ie.. when im talking to them, put my hand on their arm.. ect ect.. or touch them, but not in a sexual harrassing way if you know what I mean lol)
does this help?
(: