How to make a human Castiel behave and learn... physical attention.

I saw a 30 Day OTP challenge and wanted to do it. And I'm SeptiPlier trash so. bye

"If you're the nutella, then I'm the bread. Wanna know why? Because you'll be spreading yourself all over me tonight~" Note: This story does contain graphic depictions of sexuality, strong language, and/or other mature themes. Don't proceed to read if you don't know about the birds and the bees.

Mark's turning 29 and Bob and Wade decide it's time he does something exciting for one. -- NSFW, R18, GRAPHIC SEX SCENE -- Septiplier (involving BDSM)