Carefully does it, certainly. There have been things I've been hesitant about asking for, but as soon as I make it clear that I don't mind if it doesn't ahppen and that it'd only happen if my OH was entirely comfortable with it, then things work out well.

There is one thing I've never explicitally asked for and he knows what it is. I wont ask though, because I know it's the one thing he'd never be comfortable with.