And. While the whole DCU is humping each other?
They get very analytical and trace down the source, where Tim unleashes a whole Hell of deliberate violence, while he and Babs talk continuously and manipulatively about each other's neurosis, loves and obsessions.
Because, you see, that's what *really* gets them off.
I know, it's neither plotty nor porny, nor completely on character. But I do think that there couldn't be any Babs/Tim not beginning in their freaky, freaky brains (and with the participation of half a dozen ghosts, because Tim's *Robin* and there's *Bruce* and, and, and).
But why, you ask, should there be Babs/Tim? Don't look at me. I just follow the inscrutable exhortations of my soul.