Is it normal for a guy to compliment a female coworker when he already has a wife and 3 kids?

I’m posting on behalf of a friend. Her coworker has recently been complimenting her a lot, keep in mind he has a girlfriend & kids. These are some of the things he’s been saying to her:

“you have a beautiful smile”
“you have beautiful eyes”
”you looked really hot in that outfit the other day”
“ you look so hot when you wear glasses”
”I got mad when you wore a big hoodie, because I wasn’t able to see your ass”

he will also try to make her laugh just so he can see her beautiful smile, he has literally told her this.

When she tells him that she’s not comfortable with him complimenting her because he has a girlfriend, he’ll just say things like “It’s just a compliment, I’m just being nice, why do you have to bring my girlfriend into this? Im just trying to boost morale, so it’s a more enjoyable work environment” even though my friend gets along with her other coworkers just fine.

Do you think this behavior is ok with a girlfriend? Do you think this is cheating?
Is it normal for a guy to compliment a female coworker when he already has a wife and 3 kids?
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