T.R. Knight Dating Mark Cornelsen

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Looks like T.R. Knight is off the market.

The Emmy-nominated Grey's Anatomy star, who plays George O'Malley, stepped out with boyfriend Mark Cornelsen during the 2008 Elton John AIDS Foundation Oscar Party held at the Pacific Design Center in West Hollywood on Sunday.

The two held hands and looked very happy together. See below:

T.R. Knight, Mark Cornelsen

Mark Cornelsen and Grey's Anatomy star T.R. Knight.

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

Noname

Gay, straight, black, white, purple T.R. is a doll! Next to Sara Ramirez, I have the biggest crush on him! I tried to hard to hate him after he hurt my Callie, but you just can't no matter how hard you try. And in real life he's even more adorable with his handsome beau! Good luck to them, I hope they last!

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Awww, way too cute

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i never knew T R was gay.but still der very cyte together

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thats so cute XD he's a awesome guy..i'm happy for him. another great guy's off the market.

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Mark I am so happy for you!

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cuties!

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I am glad he found love, he is a great guy.

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LOL, even though my first reaction was back off Mark, TR is mine, my second was aww, they are so cute and TR looks so happy.

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Mark's a cutie. They look very happy together!

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aww....he's so cute and TR looks so happy!

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Grey's Anatomy Quotes

We're all going to die. We don't get much say over how or when, but we do get to decide how we're gonna live. So, do it. Decide. Is this the life you want to live? Is this the person you want to love? Is this the best you can be? Can you be stronger? Kinder? More Compassionate? Decide. Breathe in. Breathe out and decide.

Richard

Did you say it? 'I love you. I don't ever want to live without you. You changed my life.' Did you say it? Make a plan. Set a goal. Work toward it, but every now and then, look around; Drink it in 'cause this is it. It might all be gone tomorrow."

Meredith (closing voiceover)