I read a fic awhile back, I think it was on kink_meme and I can't seem to find it after having gone through their pinboard.

It was a A/B/O society and Jensen was part of some religious sect that believed being an omega was a sin and they cast him out (not before the Alpha Pastor tried to rape Jensen). Jensen was walking down a road and Jared offered him a ride. Jensen was in heat and masturbated in Jared's truck. Jared eventually took Jensen to his house but wouldn't have sex/claim Jensen as his mate because Jensen was underage. Instead he goes out and gets Jensen a knotting dildo and helps him use it to get him though his heat.

I'd appreciate it if any of y'all could point me toward this fic again.