Sometimes teasing is just a playful way of starting a convo when you don't know what to say...

Little boys tease little girls to get their attention, some boys don't outgrow this completely.
My bf teased me on HS 10 yrs before we started dating, sometimes he still does. It was harmless then and its harmless now.

Not all teasing is bad behavior.
Anyway my point is don't discount him on teasing alone. Judge the actual teasing, was it his useless attempt at flirting or conversation (I'd say because you said there's no way you could be mistaken for a boy) or was he infact being mean? ...Which I have trouble believing because who asks someone they dislike to accompany them to homecoming?

Anyway, while teasing can certainly get out of hand, I wouldn't right someone off simply because they teased me to get my attention, if the teasing was offensive and hurtful, that's a different story and then they'd deserve to be written off.