I am looking for a story from Christmas a couple years ago. Dean is in a cock cage, his gift to Sam and he stays that way until Christmas day. During the weeks leading up to Christmas, they have lots of sex but Dean never gets to get off. Again, this is his choice. There was one day a week or two in where Sam has to milk Dean's prostate because it is becoming painful for him. The boys are in an established relationship and every day is a new kink or gift like an advent calendar.

Thanks for your help.