Anniversary (Stingsu)

This is a Stingsu One-Shot. there's not enough Stinsu stories out there.
Natsu and Gray are dating and it's there one year anniversary but Gray forgets. Natsu sees something he wasn't supposed to. Lucy comes up with a plan to get revenge on Gray and they need a little help from a certain Savertooth. Will feelings surface and a new couple will bloom? Or is it all just a misunderstanding? Does it even matter?
Disclaimer: I do not own Fairy Tail
Warning: boyxboy, cussing and OOCness