Why would a married guy keep staring at me?

Anonymous
Everyday I go soccer training with my friend at a park. There is this guy who keeps staring at me, but when I look at him, he looks away. I noticed he wasn’t doing this with other women that are around him. Sometimes he would greet me and sometimes he would pretend to ignore me. But then I’ll catch him staring at me for the rest of my training session. It got to a point that my friend told me, “I think that dude really likes you, he keeps staring at you”. This has been happening for about a year. It wasn’t until yesterday when I found out he is married. Anyway, I’m just curious why would this guy keep doing this knowing he is married? Like, why?
Why would a married guy keep staring at me?
Why would a married guy keep staring at me?
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