Robin: Wait, wait, wait, wait, wait, wait, wait. Are you suggesting that when one of you feels something, the other feels it, too?
Barney: Oh, God, you guys are so codependent.
Lily: No, we're not.
Ted: Oh, really? What about the other day?
[flashback to Lily & Marshall in the kitchen:]
Lily: Oh, I need to get some eggs.
Marshall: Oh, I'll come with you.
[Marshall walks with Lily up to the refrigerator, then they each return to separate kitchen counters]