I saw this hb8 this week-end that I knew from HS. She recognized me and came to say hello but I didn't get to talk to her much since we were in line and I was with friends celebrating a birthday. I had seen her downtown a few month ago but I was living out of town at the time and while the conversation had gone great, I didn't pursue because of the distance. I am now back in town and am trying to re-ignite the contact if its not too late.
I was debating what was the best way to get back in contact with her (We were never close, but she always recognizes me when she sees me.)
I am leaning toward a txt since I don't like the idea of searching her on facebook (I always find that a little creepy) I have her phone number from the last time I talked to her and I know she has mine because she told me so.
I am thinking of something light like:

What's up HB8, since I never meet anybody from [HS] downtown, I can only conclude that you are stalking me... That is super...

What do you guys think?

That seems C/F and light...

I don't know about that line, because you saw her (or she saw you) just once since a few months.

What did you talk to her about when you saw her last week? Maybe you can use something you discussed at that time with her and mix some C/F stuff with it.

Text if you're trying to build rapport, call if you want to set up a date.