So, I have a couple of friends who are in weird "grey area" relationships, where they won't confirm that they're dating a specific person, but they also basically seem to be exclusively dating (and sleeping with) that specific person and have been for at least a year. We're not doing "and guest" for truly single friends, but these friends don't actually seem single. Would it be wrong to address the STD to "Jane Doe and Mike Smith," given the non-official state of the relationship and that they don't live together?
ETA: I'm cross-posting this.