Is it normal that a "straight" man act this way towards me?

e's a hetero-married, Silver Daddy type. We met about ten years ago at the gym and fool around in the showers occasionally whenever we're there at the same time and have a chance to do so. Nothing serious, just touching, groping and little sucking when the coast is clear. We've met up privately at my place a few times, but he seems hesitant to do that very often.

We've also become friends. We talk about a lot of stuff and keep in touch via email, though not often. I've even thrown some business his way and hired him to do some work for me.

Anyway, I walked in on him in the showers today fooling around with another guy. I was a little taken aback but just thought, "OK, hot, whatever, ..." He stopped what they were doing. I said hello and went to the shower I usually use (it's an open shower). He started acting all nervous and weird and even made a point of coming over to where I was and finishing his shower next to me. But he couldn't take his eyes off his new (younger than me) friend's dick. We chatted a bit (awkwardly) and I showered quickly and left him to it.

He followed me a few minutes later and continued to act nervous and weird guilty and talk a bunch of nonsense. Like he had been caught in the act. Or been caught cheating on me or something. He made some excuse about why he was with his new friend but I brushed it off. We got dressed and left together and he kept saying, "OK, see you later. Bye. See you next time, Bye. See you."

Isn't that weird? What's that about? Has he developed feelings for me over the years and that's why he was acting like a naughty little boy caught doing something bad? Most guys would have just shrugged it off and carried on.

I admit that I do kind of have feelings for him too so maybe I'm reading too much into it. I really like him and if life had taken us in different directions I can imagine us being together as partners. Anyway, he IS married to a woman and I'm not kidding myself that he doesn't fool around with other guys besides me. I certainly do too. We're not monogamous sluts.

Anyway, it was all very awkward and weird.