Is my old best friend trying to tell me she misses me?

[AvuncularUngulate]

Oh, if I had to guess (which is really all I can do, since I don't know either of you), I'd say she misses you. Maybe her "perfect" boyfriend has started to tarnish, or maybe she realizes she needs more than just a romance, or maybe she just plain misses you. You sound like a very nice person, so that shouldn't surprise you.

Why not send her an email or something, thanking her for re-tweeting your message, and see what happens. Maybe you two can start over.

But you're right about one thing--high school is in the past, where it will remain. Try to be friends moving forward, not agonizing over the past.

Good luck.