It's forbidden, but it happens. And other Jedi might look the other way or pretend they don't know what's painfully obvious. [As he had with Anakin. What if he'd done something about it? What might have things been like then?]

I do wonder what it might have been like, of course, but I do not regret my decision. [The lines on his forehead are gaining in number as it furrows.] I do think that I should never have entertained the relationship, to begin with. If I hadn't... [Maybe he shouldn't be saying all these things, being so open, but Rogue is remarkably easy to talk to. And hiding his secrets here seems pointless.] She'd still be alive.

Someone killed her right in front of me in an attempt to turn me to the dark side.