Driving me crazy.......
Early eighties teen film about a popular HS girl who gets involved with a motorcycling "bad" boy. There is a scene where they go swiming at night in the school pool (after hours) and the film ends with her getting on his bike and riding off into the sunset (much to the horror of her clique).
Can't remember who was in it, or anything else helpful. HELP!

Grease 3?

Was it this:

http://imdb.com/title/tt0087983/

"Reckless", 1984, with Aidan Quinn and Daryl Hannah

I seem to recall a motorcycle, she was a cheerleader, and they get biz-zay poolside? Yeah?

No...

Wait. The more I think about it, this sounds like "Kickboxer". Yep.

...It was "Kickboxer IXXVQ : I Am The Kickboxer, Koo-Koo Katchoo"

Houston is a terrible, terrible city.

Oh my god!! I used to watch this movie when I was little.. It's like totally the hugabunch movie I like totally love this movie..

Not again. ~shakes head~

Yes!!!!! thank you, thank you
Reckless.