My ex is gay. That seems to be a frequent response that I get from women.
The first time that woman told me that her husband left her because he was gay, I was shocked. But as I dated more women, I discovered that this was more common than I had imagined.
Now, it could be that gay men were afraid to come out years ago but not now. So, those who were living a lie are started to come clean. Or, it could be that saying your husband is gay, is a convenient excuse for a failed marriage.
But, either way, they need to be tested for HIV.