Guy I like wants to go skiing together- I CANNOT ski, he is a pro?!?

I've been skiing about 3 times in my entire life (im 16) and have NOT enjoyed it. He's really into skiing and snowboarding and is really really good. What can I do to not humiliate myself? I know he likes me, we've been out on a few dates and is really nice but i know how much i suck at skiing and i don't want to be a kill joy, He wants us to go skiing next saturday.