How they met - Comment #4,696,114

This is game Serena.

Anime Serena lived happily ever after with Ash after Kalos, and then a wobbly-animated ditto disguised itself as Ash and went to Alola.

Nah, Ash caught a Ditto, and it pretended to be him and took Pikachu on vacation.

No, Ash died on the 2nd episode. The Ash we see from there on is a Ditto, which explains why he doesn't age.

Nah man. Nah. Ash broke her heart.

my headcanon is that he died in Ep 1 but Ho oh revived him a la the legendary beasts

And THEN a Ditto impersonated as him.