"Booth (David Boreanaz) will experience a "major health crisis" in May that will cause him to hallucinate. What he won't imagine is being in bed naked with Brennan (Emily Deschanel) in the season finale. That really happens. What's more, "we can't have them in bed naked without having sex," says exec producer Stephen Nathan. Moreover, the postcoital fallout will be dealt with quickly. "There's going to be a resolution by the end of the episode."
I knew it was just the way Ausellio worded it. the BB sex is real! :)