Clutch Problems please HELP

hey all,

so i let my friend drive my car to go to the doctors, BIG MISTAKE. When he got back the car smelt like burnt clutch! so now when i put in gear if i accelerate really slowly the car moves but as soon as it give some gas the car slip out of gear and revs up.. any suggestion?

i have a 2003 Tiburon GT V6 manual.

Thanks