It might have happened eventually, if they'd been stuck here long enough for Jack to really get bored even with the possibilities offered by a threesome with a vampire - or for a night of supreme drunkenness, or the right kind of glitch.
Whatever, Jack will of course be happy to provide wank material for as long as Aidan carries the memory of him in his head!
"Aidan!" He turns from gazing out around the dome, watching the people he's grown close to prepare to separate and depart. He always has a fond smile for Aidan. "I gather you're heading off with the lovely Rebecca tomorrow?"