Gabi is heartbroken over witnessing Josh with his therapist, but is stuck with him on their plane to Australia. Commiserating with fellow traveler Adam (guest star Tyler Ritter), Gabi accepts his offer to pose as his new wife on his honeymoon to Hawaii, since his actual bride Amanda (guest star Kelen Coleman) dumped him at the altar.
Trying to make Josh and Amanda jealous, Gabi and Adam decide to make the most of their "honeymoon" at a couples-only resort - and post about it on social media. Meanwhile, Yolanda, Elliot and Alan have to think fast when they end up at the same resort and the manager assumes they're a "thrupple" - a three-person couple.
