Patrick Dempsey might have a great head of hair, but Joel McHale has a message his fellow TV star:

You don't have Lauren Stamille!

Stamille played Derek's love interest on Grey's Anatomy for a few episodes. But the (Mc)dreamy one eventually chose Meredith over her character, leaving the beautiful actress free to get with McHale's Jeff on Community.

"So eat that, Patrick Dempsey!" McHale said.

In January, Stamille will reprise her role as Michelle, a teacher at Greendale. Turns out, she and Jeff have been secretly sleeping together for awhile.

"There's a strict policy about students dating teachers for legal reasons, as the dean describes it," McHale told E!, adding that Jeff and Michelle will have to report their dalliances after Pierce Tweets about their relationship.

Does this mean Britta is no longer a potential mate? Said McHale:

"Britta is obviously not wanting any part of me, so I have moved on - and I have found a woman who is a lot taller than her. In your face, Britta!"

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.