Izzie can't watch Alex hook up with others...

HuffPost-
Katherine Heigl recently left 'Grey's Anatomy' for motherhood after six years as Izzie Stevens, and now she can no longer bring herself to watch the show.

"It's a weird feeling because it's very bittersweet," Heigl told David Letterman Thursday night. "I really did like my job and I really loved the people I worked with."

"Do you still watch the show?" Letterman asked.

"I can't, I can't do it," Heigl said. "I stopped watching in November when I went on family leave because I felt like I was missing the party, it was weird...I actually get a little bit jealous about Alex sleeping with other women. It's really inappropriate."