They were not used to being alone and when they were together they were not.
Nobody knocks at their house; there is only one person who ever comes and Edward doesn't need to knock.
Everything — Ed's wishes, his remaining dignity, even his trust — was going to have to come second to Ed's life.
"I know, I know, the deal is whoever's on bottom gets to pick your shape, but really, this is ridiculous."
Alphonse might not have been attractive in Envy's eyes, but what he currently represented was.
Once Envy could have killed Al with the mere scratch of a sharp black finger against those thick bloody lines.