How It All Began - S1: E2 - "A Night at the Theatre"
Zach and Dennis made plans to see a play, but Zach screwed it up! They try again when Dennis gets the couple tickets to see Arthur Miller's iconic "Death of Salesman." But once again, things don't turn out as planned...but maybe better.
How It All Began - S1: E4 - "The Barber of Da Ville"
In Episode 3, Dennis was surprised to get a phone call from Luke, his ex, wanting to meet for dinner. On the day of, Dennis confides in Miles, his barber/therapist, who does his best to make Dennis look dapper.
A few days later, while Zach recuperates at Dennis's house, Luke and Dennis finally have their dinner together; but things don't work out quite as Luke had hoped (and it doesn't help that uninvited guests show up).
How It All Began - S1: E9 - "Three Guys Walk Into a Bar"
Zach is furious that Dennis is helping fund Luke's movie, sure that it means that the two of them are still involved personally. Will this be the final straw for Zach, or will Dennis be able to convince him otherwise?