As they say, there are two rules in improv: Never say no, and never ask why. When another actor asks 'Why?' or says no to something you're suggesting, then it's very clear that they're putting the onus on you, because they're not comfortable with it themselves.
“I'm not saying that there's anything better than mated bliss at its best, but I'm saying that living alone is as good in its own way. But we haven't quite given ourselves permission to recognize that.”