It's a question he's been expecting, but isn't certain how to answer. Because of Jason, there's no way to explain what he wants without possibly freaking Castiel out. After all, his only experience with dominants is...well, abuse.

Finally, Sam shakes his head. "No," he admits after a few moments. "No, I've never been the kind who gives up control easily. I prefer to be the one in control, to give order in chaos. My desires...I like being the one in control."

More than liked it, but this isn't the time to talk about it. Not like that, at least.