Asked by: Adrian Hayes, Ireland
No. Spacecraft are too cramped and too public to keep any unauthorised zero-g shenanigans secret, and being caught would almost certainly guarantee that the participants would never go into space again. Officially sanctioned research has begun into two-person sleeping bags that might allow weightless sex, but so far nobody has actually tested them.
Luis trained as a zoologist, but now works as a science and technology educator. In his spare time he builds 3D-printed robots, in the hope that he will be spared when the revolution inevitably comes.