Steven, as usual, was looking for super rare stones... when he was passing by some really dirty river, he saw a Shaymin falling off a soggy log. The Shaymin screamed like an airplane crashing into a building, Steven walked over there very bluntly and saved it. Retarded enough, the Shaymin could talk, and it talked in a very valley girl voice. It thanked Steven, and Steven shoved it in his bag of stones. While walking the Shaymin was moving around a lot, and then finally it came jumping out. It somehow transformed into its sky form, oh boy. Steven's stones were so amazing that Shaymin just turned into that form without a glacidea flower or whatever.
Shaymin flew over Steven's head, and he tried shooing it away. Shaymin, a genderless pokemon, fell in love with Steven for no reason. While Steven was walking and ignoring Shaymin, it tried to kiss him. Steven stopped walking and gave it a really blank face; he pulled out something from his pocket and put it on shaymin's lips. It was lip balm, and Shaymin seriously needed it. Steven continued to ignore the ugly pkmn.
Shaymin then decided that it will make Steven fall in love with it. It flew away, and returned with something really really big. It was the biggest stone ever, and when Steven saw it, he almost had a heart attack. Shaymin told him, if he wanted the stone then he would have to marry Shaymin. Steven did not want to get married to a pokemon, especially Shaymin, but he sort of kind of had no choice, okay well he did; it was either marry Shaymin and get the biggest stone in the world, or not marry Shaymin and not get the biggest stone in the world.....
So it was decided, Steven married Shaymin. A few times during their marriage, Shaymin would try and have you know what with Steven, but Steven would refuse every time. Just in case Shaymin tried to walk out on Steven with the stone, Steven locked it up somewhere safe. So now Shaymin can't take the stone when he refuses… what a smart guy........ (i wonder what their honey moon was like)