<human>: Background on me:
I'm a senior in high school and a rather outgoing person, and I usually don't have trouble asking girls out. 

The situation:
There's a girl whom I'm Facebook friends with. We went to elementary school together and haven't seen each other since then. We've talked in a few comments sections on Facebook but nothing more. 

Anyways, fast forward to present day and we've been FB friends for a few months, Maybe years? I just started noticing her on my newsfeed. She's very attractive, goes to a different school than me, and is interested in all the stuff I am (PC gaming, modding, general nerd stuff, etc.). She broke up with her boyfriend a few weeks back and is now single.

How do I ask this girl out? I've never had to ask a girl out over Facebook. I want to know a good way to do so without coming off as creepy.

Can you provide a brief overview of the text?
<bot>: I haven't seen a girl in a long time and the only way to contact her is via Facebook. How do I ask her out?