Hey guys, new to the forum, excited to be here!
The thing is, a long time ago I met this girl at a party (she used to go to my high school, she's younger than me) and I don't remember if she added me or I added her on facebook.

She is really, really hot and gets a hell lot of attention, and apparently only hangs out with hot people. The other night I saw her at a club, and she said hi, but I was so high I just said hi back and walked away. Hours later I realized the fuck up.
I started talking to her on facebook, which is the only means of communication we have. I made her laugh a couple times, gave her a little nickname, teased her a lot and at least now we're more acquainted to each other.

Thing is, I don't know where to go from now, she recently uploaded a pic of her and her gf, who is actually really hot too. I thought about starting a conversation with the whole 'wow your friend is really cute' line, I don't know if it would work though.

How do you guys suggest I go to the next level? I want her to know I'm attracted but I don't know if I've teased her enough yet for that, I would think she would just blow me off if I show interest right away and I want to get her number.
Also, any facebook conversation openers you can think of for this kind of situation?

Thanks a lot guys