Law & Order: Special Victims Unit, Season 9

[Stabler and Benson just found out that Tommy isn't Jake's son and are walking through the precinct hallway while discussing whether or not to tell Jake]

Benson:
He has the right to know.

Stabler:
It's not our place to tell him.

Benson:
Jake is raising a child that biologically isn't his. He's married to a woman who's being unfaithful. You think that ignorance is bliss?

Stabler:
First of all, Tommy is his son. And Jake is the only father he's ever known. Now they love each other. Why do you want to mess with that?

Benson:
Because it's not fair to Jake or Tommy.

Stabler:
If Leah Keegan wants to tell her husband that Tommy's not his, that's her choice, not ours.

[Benson spots Jake sitting in a chair, having overheard what Stabler just said]

Jake:
What do you mean? Tommy's not my son?