Replying to Stupid Facebook Group

So I just found out my friend made a facebook group about how I can't ski. I'm really really mad because i thought that the guy was my good friend.  He said the reason he made it was because most of my posts are related to skiing and I am no good.  But I just learned a backflip and 270 on and off in my first 2 months in the park.  I know he has JUST learned those things and still cant 270 off after a whole year and a half in the park and he thinks that I suck.

But now he's spreading this rumor to everyone that I suck and am not good enuogh to talk about skiing so much. I just talk about it because I love it.  What makes it worse is that I'm already going through a hard time with my parents and now I am sup. 

I just can't wait for next season to prove to him how much better than him I am.  But for now what do you think I should do?  I'm really unhappy.  Anyone know how to hack facebook profiles?