My first time with another man was totally unexpected, as a friend of mine got naked and kissed me. I found myself aroused, and we ended up having sex.
I enjoyed that first time, and have had gay sex many times since (though not recently).
My advice would be that if you're interested at all you should be open to the possibility. I found myself surprisingly receptive (in more ways than one).
Before my first time, I considered myself straight...but my girst time was life-changing.I now consider myself to be gay.
However, I wasn't married when I first had gay sex, and I don't think that I would have ever had gay sex if I was married at that time.
You have to decide what's right for you and proceed sccordingly.