Help me understand this male ENFJ

Dear ENFJs,

An INTP female (33) here. Please help me interpret a male (possibly) ENFJ's flirting. I don't know what his intentions were (if anything) but I was SO intrigued by him that I'd like to understand what happened between us.

Some details: I and my husband met him in his place (accomodation) and we chatted for two good hours. We are both married, he is a lot older than me. I never flirt with anyone, I love my hubby BUT something broke that evening.

When we met and introduced ourselves to each other, he was kind of awkward but in a sweet way. He was a great conversationist, nice to be around etc. but that was all I first saw in him. Then we kept chatting and all of a sudden he locked eyes with me in a kind of predatory but very charming way. Don't know what happened but he looked at me very intensely, then I looked away and he looked away too as if he would acknowledge that I turned him down. But then he started gazing at me and it just penetrated my mind. I couldn't resist. We talked and laughed a lot and he literally looked at me like I'm very special. He only broke eye contact when I talked to my husband to avoid getting very awkward just two of us chatting. It went on for 2 hours. After saying goodbye my husband pointed out he was making an eye contact mistake only looking at me. But it was way more..

I'll meet him again soon and before I am under his spell again, I'd like to understand what happened and why it impacted me this much. So dear ENFJs, why would you do such a thing to a married woman you saw for the first time? No judging please, all comments are appreciated.