This scene was inspired by Gravitation, when Eiri finally tells Shuichi. I'm sure those of you who know the series would find the similarities.
"Lover."

"What?"

"I said I would be your lover."

Ed tilted his head, watching the man turn from the window overlooking the city of their hotel. Secret meetings were so hard. "Is that so?"

He smirked. "On one condition."

The blonde blushed, reaching up for his coat hesitantly. That look in Mustang's eyes always gave him shivers… and he was willing to please.

"No."

"No?"

"Unconditional love."

Ed wasn't sure what he meant by it at first, frowning before the smirk had faded, Roy's eyes growing distant, and staring out of the window. "That's all? You're really a fool, Mustang."