Alternate timeline: Other protagonists find love in their Pokemon

Arceus realized that there were trainers attracted to Pokemon, and knew that they wouldn't accept any human as their partner. Arceus could help them. They all saved their regions in one way or another.

Arceus acknowledged the trainers from Kanto and Johto that defeated Team Rocket; Red, Green, Gold, and Kris

Arceus also considered the Hoenn trainers who defeated Team Magma/Aqua; Brendan and May

The Sinnoh trainers were some of Arceus' favorites, as they saved all of space/time from Team Galactic; Lucas and Dawn.

The Unova trainers faced many hardships, causing Arceus to feel guilt. Still, they defeated Team Plasma twice; Hilbert and Hilda, then Nate and Rosa

The Kalos trainers had the strangest adventures, as Arceus was flabbergasted by the stupid plan Lysandre thought up. Needless to say, they took down Team Flare; Calem and Serena.

The Alola trainers were admirable. Lusamine was a lot of trouble, but they brought her down, as well as team Skull, who were literally just a gang. They saved Alola from being overrun by Ultra Beasts; Elio and Selene

Finally, the trainers from galar, who saved their region from Rose, who wasn't that bad of a guy, but still took stupid measures to ensure permanent energy for the whole region. The trainers gained the trust of the legendaries and defeated the Alien Dragon Eternatus; Victor and Gloria.

They were all 18 now, each starting their journey at 10, but none of them (except Red and Selene) gained the title of Champion. Now, with no more journeys to go on, the trainers felt sexually attracted to their pokemon that they had known for 8 years.

Arceus focused on one specific trainer...