S06E11
7.7
The Mermaid Theory
7.7(30)December 6, 2010
When Ted's new friendship with Zoey tests the theory that single men and married women can't be friends, he invites her husband, "The Captain," to hang out with them. Meanwhile, Marshall and Robin decide to spend alone time together, and Barney and Lily possibly have a fight.
Based on 30 votes