Robin and Ted navigate being exes who are now roommates and discover they get along better when they're sleeping together as "friends with benefits". Barney is trouble by the news and has a hard time dealing with his emotions. In an effort to reduce Ted and Robin's roommate conflicts and stop them from sleeping together, Barney helps out around the apartment, leading Ted to suspect something is up and confront Barney about his feelings towards Robin. Also, the bathroom situation at Marshall's work is super-stressful, and as a result he has trouble doing certain business there.
