Kevin sits on Michael's lap in the Christmas episode of The Office, "Secret Santa." Michael soon regretted extending that invite.
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The Office Season 6 Episode 13 Quotes

My diabolical plan has been put on hold for Christmas. My heart just melts when I hear the sound of children singing. [pauses] Ha! Not really. I'm just tired. Days are short ... I don't know. Maybe I'm depressed.

Dwight

Yes, they're the only two gay guys I know. But they should be together.

Pam