Maybe you're not attracted to this new guy because you're distracted by the married one.

Years ago I was really attracted to a neighbour of mine. Nothing came of it because he was in a relationship with another woman. Then one day he asked me for my number and made mention he was single again. Unfortunately, I had just started dating someone new so our timing was really off. We hung out as friends a couple of times but because my heart was set for my new person (whom I eventually married), nothing materialized between us. I was no longer attracted to him. Then when my marriage ended, we ran into each other. Once again I found him extremely attractive.. but, he had moved away, gotten married, and had children. Boy, what a BIG mistake on my part. He was super nice and really wanted to settle down with someone and start a family. I later ran into his mom who told me that he had really liked me and were both sad it didn't work out between us. Now here I am in another sh!tty situation.

My point is, maybe you just need to get married man out of your head and give this new guy a real chance. Don't compare the two. Married man is just a self-fulfilling fantasy of being wanted by a man who has another. It's a competition for you. Stay present and be with the one you're with. If you're truly not attracted to him, move on.