Mark Cornelsen Gossip

Besides the story lines progressively sucking harder each year, Grey's Anatomy seems to have a major problem on its hands: keeping its cast intact.

The newest rumor, which has pretty much been confirmed: T.R. Knight (George O'Malley) wants out of his contract and the show is poised to oblige.

In the past year and a half, we've now seen ...

• Isaiah Washington refer to Knight by a gay slur twice, ultimately causing Knight to come out of the closet and Washington to be dismissed
• Katherine Heigl, one season after winning an Emmy Award for her role on the show, publicly complain that her character's story lines suck
• Kate Walsh bolt for a medicore spin-off, Private Practice
• Brooke Smith get hired as a full-time cast member, then fired just 10 episodes later after ABC didn't like her character's girl-on-girl action 
• T.R. Knight, having allegedly become a malcontent, ask to be released from the show, which he soured on ever since Washington-gate

This is too bad, as Knight was always a bright spot and fan favorite on the series. At least he and his boyfriend, Mark Cornelsen, are still going strong. Here they are out seeing The Curious Case of Benjamin Button in L.A. last night ...

T.R. Knight may hate his job like you, reading this at work when you should be filing TPS reports, but he and Mark Cornelsen remain happy. [Photo Credit: Splash News]

Sorry, Zac Efron. T.R. Knight is off the market.

The talented Grey's Anatomy actor recently went public with his new boyfriend, Mark Cornelsen, during the 2008 Elton John AIDS Foundation Oscar Party held at the Pacific Design Center in West Hollywood on Sunday night.

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

Mark Cornelsen (left) and Grey's Anatomy's T.R. Knight.

T.R. Knight came out of the closet after infamously being outed during a fit of rage by former co-star Isaiah Washington, who ended up not being retained by Grey's Anatomy after the conclusion of its third season.

Knight received an Emmy nomination for Grey's Anatomy, while Washington went on to star in Bionic Woman, which got axed. Karma's a bitch.

Previously, Knight had been romantically linked to actor Luke MacFarlane, who went on to date Wentworth Miller of Prison Break fame.