He's been after her since the day they met. He'd been a newly-made Major and, at the time, the youngest State Alchemist ever. She'd been a Colonel going on Brigadier General.
With no warning at all, something changed in the air between them, and the fight turned dirty.
The magazine told him he was doing it all wrong. First, it said he was boring. Then, it said he was bad in bed. Next, it said he was inconsiderate. After that, it told him he was gullible.
"Yeah," Fuery chips in, "you're always the one to stop Ed from doing weird stuff, not the other way around."
It's a paradoxical situation; Alphonse is closer to Edward than he has ever been, yet somehow he feels as if they don't know each other at all.
"You paid for him to have sex?" Mustang says incredulously, putting his pen down on the table top and shoving the form away. "You bought him a prostitute?"
Smug, he'd stayed just long enough to give his report and then had marched straight off to Resembool with Al lagging behind.