This was the only bunny I had for this, and it sucks. I apologize for the suckiness of this one
Warnings for fluff
Disclaimer- I do not own FMA. Otherwise there would be fangirl satisfying yaoi galore.
Pairings- RoyEd
Train
Roy had never thought something like this could be hereditary. Sure, he had always known that his boyfriend had loved trains. He had spent a large part of his teenage years on trains, and then some. He'd eaten up books about them, learning how they worked, what they were made of and how to operate them, but Roy had just chalked this up to his appetite for knowledge. He'd been radiantly happy when Roy had gotten a new framed picture for their living room, to replace the faded one of generic plants, of a landscape and a small train, snaking through a valley, but Roy had just assumed Ed was glad to be rid of "those atrocious girly flowers."
But now, there was just no getting around it. He watched Al's son turn up his nose at every other toy except his tiny engine and laughed. When Ed looked at him with a question in his eyes, he'd simply said "I should have known it was in your genes," and chuckled quietly.