In " The Colonization Application ", Sheldon and Amy decide to take their relationship to the next, to buy a pet together - a turtle.
He refused to that as well.
Penny who has signed the latest on as an occupant of the apartment and wants to attend since she gets to lead them in the pledge.
He never wanted one after that, until his friends threw him an enjoyable birthday party in " The Celebration Experimentation ".
Troi decides to return to the Enterprise and allow Crusher to have some time alone, which she appreciates.
A second fake abdomen was created for the surgery scene in which the symbiont is moved into Riker, which worked by having a crew member lie under the surgery table, pulling the symbiont into the opening using a concealed string.
First she asked for sex due to wanting physical intimacy and the couple made counter offers and settled with cuddling, something Sheldon was reluctant to do.
With no where left for him to go, Ronin says he has one last place:
Jonathan Frakes, who played Commander Riker, explained later that "they would not address the fact that the actress was pregnant",  requiring body muscle sexy cast and crew to hide McFadden's stomach from the camera with furniture or by using camera angles which only showed her from her breasts upwards.