They were both fucked up and it worked for them. Dean didn't care anymore what anyone else might think. Sam's opinion was the only one that mattered to him and Sam seemed perfectly on-board with this idea.

He sat beside Sam and reached over to secure his wrists behind his back with the cuffs. Made sure they weren't buckled too tight, then pulled the leather strap out of the bag. The 'Little Brother' name still amused the hell out of him.

Dean reached over to cup Sam's chin in hand and bring him closer for a long, deep kiss.