Promise Drabble-turned-fic for Bump 'verse

Characters: John Myers (Hellboy) and Kitty Pryde-Myers (X-men)
Rating: PG (brace for wibbles)
Setting: Bump in the Night!Verse, Couples Retreat tweak
Prompt: #96 Promise - Drabble Table
Word Count: 855

( All bad things come to an end too )