I read from Ausiello Files the next thing: "In case you've been living under a rock without Wi-Fi, what they want to do is get the two detectives in bed having sex in the May 14 season finale -- an event Nathan assures me will "
not be a hallucination." But first, Brennan will ask Booth to father her child on May 7, a request that leads to Stewie's first of two appearances." Which means that Booth is not hallucinating the sex thing. Although that would be exactly what the writers would do just to annoy us
Okay, it's not good to trust spoilers, but I'm kinda believing this one ^^ And Bones having a baby still sounds surreal. But, it seems that's going to happen too..
And btw, there was more spoilers about Bones (and the Family Guy character) at Ausiello Files, I just didn't want to copypaste the whole text here
Hmm, but hey maybe Booth only thinks he's hallucinating the sex-thing.. I wonder where that idea came from. It sounds weird.