Season 6, Episode 23: "The Face Painter"

David, I don't think we should see each other anymore.

You gotta be kidding. How come?

Well, you see, David...

...you're a face-painter.

Yeah, that's right.

Well, it's not that I don't like you...

...but, well, to be perfectly honest...

...I'm just having some trouble getting past the face-painting.