Derek asks questions in "I Saw What I Saw." Hopefully someone can get to the bottom of what happened.
A funny scene from "I Always Feel Like Somebody's Watchin' Me," from the sixth season of Grey's Anatomy. There's some serious baseball going on!
Mark Sloan (Eric Dane) is one of many hot and emotionally challenged doctors at Seattle Grace. But he's come a long way since dating Lexie.
Mark and Lexie smile and cheer at the wedding of Alex and Izzie. These two have become a hot couple here in Season Five!
Mark finally admits this fact, and ends up getting punched. Possibly a bit of an overreaction on Derek's part.
Mark and Addison used to have a thing. Now the only thing they are worried about is saving her brother's life.
Mark and Naomi converse in a scene from "Before and After," from Season Five of Grey's Anatomy.
We all know what that look Lexie is shooting Mark says. Or at least we think we do. The episode will prove it one way or the other.
Will Mark and Lexie go public with their relationship? Do people like their relationship? We don't know, but it will be interesting to find out.
A nice picture of Callie, Lexie and Mark at the bar in "Beat Your Heart Out," from the fifth season of Grey's Anatomy.
Derek looks on as Mark and Lexie gaze upon each other in "Beat Your Heart Out," from the fifth season of Grey's Anatomy.
Mark and Lexie in "Beat Your Heart Out," from the fifth season of Grey's Anatomy.

Grey's Anatomy Quotes

Did you say it? 'I love you. I don't ever want to live without you. You changed my life.' Did you say it? Make a plan. Set a goal. Work toward it, but every now and then, look around; Drink it in 'cause this is it. It might all be gone tomorrow."

Meredith (closing voiceover)

Derek: I wanna be with you forever, and you wanna be with me forever. In order to do that we need to make vows. A commitment. A contract. Give me a piece of paper.
Meredith: I don't! I... I... I don't. I have post its!
Derek: (takes the post its and a pen) Ok. What do we wanna promise each other?
Meredith: That you'll love me... even when you hate me.
Derek: To love each other, even when we hate each other. (writes it down) No running. Ever! (Mer smiles and comes and sits in front of him) Nobody walks out. No matter what happens.
Meredith: No running.
Derek: (writes it down) What else?
Meredith: That we'll take care of each other, even when we're old, and smelly, and senile. And... if I get Alzheimer's and forget you...
Derek: I will remind you who I am, every day. To take care when old, senile, and smelly (writes it down) This is forever. (signs it) Sign.
Meredith: This is our wedding. A post it? (smiles)
Derek: Mhmmm. If you sign it.
Meredith: (signs it, and hands it back. Has tears in her eyes) Now what?
Derek: Now I kiss the bride. (They kiss)
Meredith: (smiling) Married.
Derek: (smiling) Married. (sticks their post it in Mer's locker) You see that? (Mer nods and smiles) Plenty of time.