Grey's Anatomy star T.R. Knight and Mark Cornelsen, his boyfriend of a few months now, shared a laugh and a smile while out and about in the trendy Los Feliz neighborhood of Los Angeles on Tuesday afternoon...

Mark Cornelsen and T.R. Knight walking hand-in-hand.

T.R. is rumored to be a semifinalist for an Emmy Award again this year for his portrayal of George O'Malley. We'll keep you posted when we hear for sure!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.