Help me please! What can I do about this?

Ok well my school does this ski club thing and i signed up for it. Well I snowboard and all of my other friends ski. And some of my good friends, well i thought they were my good friends, won't ski with me! I have told them that they should at least do I day of skiing with me and they said that they would think about it! :'( This is making me so sad because we have to have a partner at all times and I will probably be stuck with all boys! What do I do? I don't want to be stuck with the boys cuz I always am! :'( :'( :'(