It is J2 and it has a specific sex scene:

Jared and jensen were making out and jared made jensen lean his body over his lap and jensen tried to hold on by holding Jared's knees while jared rimmed/fingered jensen. I remember jensen saying that he feels like he's going to fall off.


Deleted fic im looking for
who are you by letsgetstarted


Amother fic I can't remember (FOUND)
fic-simple remedy by painting_walls
- Jensen and his wife/girlfriend, I think danneel haven’t been having the best of sex so she sends jensen to jared who was a sex therapist or lawyer I don't remember though