Take a song, preferably one of those overplayed top 40 love songs, and using the plot it gives you, write that scenario into the characters' lives.

For example, perhaps Douglas has a Someone Like You (Adele), or Martin has a One That Got Away (Katy Perry), or Carolyn has a Back To December (Taylor Swift).

Bonus points if its unexpected (i.e. Martin and David Cook's Come Back To Me)

Can go either happy or sad. Multiple fills, maybe, please?