John was content with his sexuality. He'd been happily heterosexual for as long as he could remember and nothing that Irene Adler could say would change that. But somehow it had shifted things a little.
Sporadically he found himself thinking warmly about his friend, and then unexpectedly felt slightly aroused... inconceivably. He'd be thinking how nice it would be to fall asleep together. Not the hot and sweaty phantasies that he had about Sarah before their relationship had crumbled to pieces, just closeness and a bit of body warmth. Damn Irene Adler to hell! He had been perfectly happy before she came along with her gender-bender theories...
And then the dreams had started. Sexy dreams involving women... at first... He'd find himself cornered by someone looking a lot like Molly but acting like Irene on a mission. She'd stride purposefully towards him; he'd take an unintentional step backwards into a wall. And then she'd press herself against him and just as he would melt into the kiss, he'd open his eyes in bewilderment to find that it was Sherlock who had him up against the wall. The heat would rise until he found himself gasping awake in a cold sweat. Or maybe not so cold.
He had never been with a man. But then he'd never met Sherlock Holmes before.