I'm looking for a particular fic I read quite a while ago where Jensen is a tattoo artist, and Jared is his favorite canvas. Many details are fuzzy, and I'm sure that I'm conflating some from other stories, but the one I'm looking for features a rather possessive Jensen who doesn't want Jared getting tattooed by anyone else. In one scene, Jared has Chris (I think) tattoo him so that he can surprise Jensen, and Jensen gets jealous at first, but then thinks it's hot. I'm pretty sure they have sex in front of Chris while Chris is tattooing Jared. Like I said, the details are fuzzy but maybe someone recognizes the fic I'm thinking of.

Edit: Found in comments. Thanks!