Meredith and Alex in the seventh season finale of Grey's Anatomy.

Alex and Lexie in pink. Cuties.

What do you think of the geeky side of Alex? He shows it off on the special episode "If/Then."

We have no idea what's going on here yet, as this episode hasn't aired at the time we're uploading this picture. But it looks funny!

What happens on this all-new episode of Grey's Anatomy January 21? You be the judget of that.

Alex and Izzie don't know what the best course of action is going forward, and it's hard to blame them.

Miranda barks orders at Izzie, Meredith, Cristina and Alex in this new promotional photo from "There's No 'I' in Team," from Season Five of Grey's Anatomy.

Alex Karev in "What a Difference a Day Makes" from the fifth season of Grey's Anatomy. What a difference he's made in the life of Izzie.

Izzie and Alex got married in May of 2009 near the end of Season 5 of Grey's Anatomy. But life has not gotten any easier since.

That was the climactic scene of the 100th episode of Grey's Anatomy - the surprise nuptials of Alex and Izzie. Meredith and Derek were the ones supposedly getting married this day!

With his new wife ailing, Alex Karev doesn't know what he's gotten himself into.

Dr. Alex Karev charts the progress of a patient.