Why is anyone suprised? You let 2 people with mental disorders into a public home to live, and they wind up doing things people who are mentally ill do, pure and simple.
Homosexuality is a mental disorder.
We had an openly gay man in our office a few years ago. One day he was complaining about the various boyfriends he had gone through and how hard is was to find a partner who was “normal”.
He was not trying to make a joke and not even aware of the irony of his statement. It was one of the saddest things I have ever heard.