How do i get something going with this girl on facebook?

[R T]

i pretty sure she liked me back in high school and still likes me a little maybe. but she was just in our group and we never talked and i never talk to her on facebook either i just "like" her stuff some times and some times she'll "like" my stuff. she always post how she's bored or needs something to do but i don't know how to go about doing it. i don't know about a message out of the blue saying "let's do this!" ideas?

since we never talked it might be a little weird to start a conversation, but i don't know