The Obikin Lost City AU ( massive spoilers for The Lost City)
Obi-Wan is a romance novelist who originally wanted to be an archaeologist and who writes extremely accurate adventure romance novels. For the last five years, he has been mourning the death of his archaeologist husband (could be Quinlan, could be another Jedi, maybe Satine, maybe Padme). He now has to go on tour for his new book, The Lost City of D.
Every book OWK has ever published has featured Anakin as the cover model. Obi-Wan thinks Anakin is not much more than a pair of abs and dislikes how much the focus on Anakin takes away from the books.
Anakin has been in love with Obi-Wan for years now.
Obi-Wan is kidnapped by henchmen (Maul, Ventress, Dooku) of Palpatine, who wants to collect the Crown of Fire, a priceless treasure. He is taken to an island that contains the Lost City of D so that he can translate the directions to the tomb of King Kalaman, which contains the Crown of Fire. Anakin and Obi-Wan's other team members (not sure who to cast as Beth, maybe Cody? And Ashoka as Allison) realize Obi-Wan has been kidnapped and devise a plan to bring him back.
Anakin calls up an ex-military warrior, Jango. They did NOT meet at a meditation retreat because this is Anakin. Instead they met at a pod racing event. Anakin is jealous of Jango being like the love interest from Obi-Wan's novels. Jango tracks Obi-Wan and stages a rescue (he dies for plot reasons) Anakin and Obi-Wab go through the rescue that occurs in the Lost City movie.
This includes the conversation about Alan getting out of Sarasota and being raised by a single mom, obviously translated to Anakin being raised by Shmi and then wanting to get out of Tattoine. Obi-Wan discovers Anakin's hidden depths, they go through the rest of the movie plot with the song and the dancing and the tunnel, etc. Obi-Wan accepts the death of his husband after realizing the priceless treasure was a crown of seashells Kalaman had made for his wife That, and the true treasure was their love. Palpatine leaves Obi-Wan and Anakin to die trapped in a tomb, but Ventress leaves them a crowbar by which means they can unseal the door and escape.
Anakin and Obi-Wan make it out of the temple. Obi-Wan writes a new book inspired by their adventures, and everyone loves happily ever after.
If this is set in the star wars universe, palpatine could want a Jedi or sith artifact, have them visit a temple of a force sect, and have the well of endless tears be a force well! Or it can be set in the universe of the movie.