I can only hope that among his silverware there are no pairs of wiseacre straight fish forks who decide to waltz into city hall and demand a marriage license.
There’s a great way for them to avoid saying that: if those wiseacre straight roommates aren’t the same sex, city hall won’t ask them to get it on before getting a license. The problem is imminently superable: solve it the same way for SS roommates as you would for OS roommates.