Shining Armor is having a 'marital' issue with Cadance. It's not a big deal, but he's concerned with the direction she wants to take their relationship. He finds drunken comradery in his parents' kitchen with his sister, Twilight Sparkle, whose heart has recently been crushed by a well meaning ex.

Shining gets very drunk. Twilight makes a desperate and alcohol emboldened move. It doesn't seem to work, so she makes a lot more. A fire is started. This is not metaphorical. Their parents are pissed.

Both their worlds change over night and Shining has to decide if he's the kind of pony his sister and his wife want him to be or if he's something else entirely.

Also Twilight kills an innocent pony, but that's way less of a concern than this emotional relationship stuff.

WARNING: This story contains heavy themes of incest and heart break. It is a NON-ENTRY in the "Incest is Wincest Valentine's Day Contest" (It is not being ranked or considered for prizes, but I am dumping it in the folder):
https://www.fimfiction.net/group/198529/incest-is-wincest/thread/531809/hearts-hooves-day-contest

The potential winnings, should you choose to enter in the contest, are (currently) at 450$ with cash prizes for 1st through 5th place!

This story contains no porn (But a separate porn side story will be published soon!), however is rated "M" for heavy sexual themes and discussions. This is off the deep end, folks. Grab your scuba gear.

Trigger Warnings --ACTUAL SPOILERS-- :
Cheating, NTR, INCEST, MORE INCEST, bad puns, bad guys, bad girls, happy ending! _{^{and maybe a murder}}

Heavily edited and proof-read by:
https://www.fimfiction.net/user/289771/Equimorto (A ton of help and input. Thank you!)

Brainstorming and minor editing help from:
https://www.fimfiction.net/user/20974/Shardikku (Helped me come up with a satisfying ending! And actually told me my original ending was f-ing terrible. They were right.)