It's good to stay faithful to your partner.
Newly engaged Rob runs in to an old boyfriend and makes plans to meet him for drinks.
Rob wants to reconnect with his former paramour.
Rob invites his partner to join him and his ex for drinks.
Rob drinks beyond moderation and ends up sleeping with his old flame.
Rob's fiancee spends the whole night bragging about how wonderful Rob is.
Rob's fiancee pawns the ring Rob gave him and moves to another state.