I don't understand the question

Jdub wonders aloud: I don't equate gays with adulterers or wife beaters from a moral standpoint... Yet would I welcome a gay couple into my Orthodox shul as members?

I presume you are talking about men; women aren't enjoined by Leviticus to keep a safe distance from one another. But why not extend a warm and neighborly hand of greeting to a gay couple?

You have no direct knowledge of what is happening in their bedroom, and you have no obligation to find out. If they are as discreet as most straight couples, why not give them the benefit of the doubt, presume they are platonic roommates, and move on?