How I Met Your Mother (2005) - 2x05 - World's Greatest Couple

When Lily moves in with Barney, the trials and tribulations of their relationship may prove too much for Barney to handle.

After Lily begs Barney for a place to stay, he concedes, but as they take their relationship to the next level, Barney is petrified that Lily has fully stripped him of his singlehood. Meanwhile, Marshall starts to enjoy fun couple activities with another man.

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