Me And My Sisters Ex Husband.

I’ve been hooking up with my sisters ex husband for about a year now. He is a few years older than me about 5 inches taller and African American, he and my sister have 3 kids together all over 18. Nothing ever happened between us when they were together and I had no idea he was even gay, me on the other hand 40 year old white, very out and very gay. It happened one night I was sitting at a local gay bar and he walked in and just walked up to me and bought me a drink, I was shocked and asked why he was here and he said he seen my check in on social. I was surprised but just thought he was in the neighborhood and just wanted a drink. Well we had a couple and he finally told me he had a crush on me and wanted to know how I felt. I reached over and kissed him and told him let’s take our drinks over to booth so we could talk in private. Well on thing led to another and now we have been hooking up in private and no one knows.