Dr. Alex Karev operates on a patient in this still shot from "Where The Wild Things Are," Season Four episode #12 of Grey's Anatomy.

... and it feels so right. Hopefully. Drs. Alex Karev and Chief Richard Webber operate on a patient in this still shot from "Where The Wild Things Are," in Season 4 of Grey's Anatomy.

Here's an image of Alex Karev, looking their best.

Lexie Grey and Alex Karev share smiles and kisses... but it's not going to be smooth sailing for them as his flame / patient Ava (Elizabeth Reaser) is also back at Seattle Grace.

Alex Karev (Justin Chambers) lays one on Lexie Grey (Chyler Leigh) and the younger Dr. Grey is surely loving it... but with Ava (Elizabeth Reaser) also coming back in this episode, what will transpire with the arrogant one's love life?

... the sex. That's what Alex tells Lexie Grey. But in the end he ends up on Team Meredith. Of course, she backs off her bitchiness a little bit as well.

These two don't seem to interact much, but we love Drs. Alex Karev and Meredith Grey. One of the few pairings not to have hooked up on Grey's Anatomy!

Alex Karev (Justin Chambers) without the familiar arrogant look. How will he handle the fallout from hooking up with Lexie Grey?

Drs. Alex Karev, Meredith Grey and Cristina Yang have been friends - or at least colleagues - since the beginning. We love all of their scenes on Grey's Anatomy.

Alex and Izzie talk with a patient. These two had some tense moments in the previous episode. Hopefully all is well.

Alex treats Ava in the exam room... while the oldest, largest intern at the hospital (Norman Shales) looks on. Looks like a good scene!

What happens in the elevator, doesn't stay in the elevator as Alex blows George's cover as a repeater. Jerk.