I agree - just get your gf to tie you up in bed every night, Regin
You'll be too tired to sleepwalk
Nah, seriously though - I can imagine that's pretty scary! Most people do grow out of sleepwalking, but if you notice you keep on doing it (ask your roommates to check up on it), maybe you could get your doctor to direct you to a specialist. Sleepwalking an sich is not too bad, but if you start kicking down all the walls in your house it's a different story....