Lily: How do we know you two won't hurt us again?
Robin: You don't.
Marshall: You know what? We have two very nice people up in that apartment who are perfect for us.
Barney: Then what are you doing, standing out in the rain with us?
Lily: Damn it. Why is there something so attractive about a bad boy... and girl?
Marshall: I think we can change them.
Lily: Come here, you two.
Barney: We'll never sleep on the Gouda again.