Would you consider this kind of man a whore?

My ex coworker told me our other coworker
Started to send her messages flirting
He is 54
She is 27
He is married
She ignored and blocked him
Updates
+1 y
My boyfriend when also discovered this
Said that he thinks man who do that doesn't deserve the woman he married with
Would you consider this kind of man a whore?
Post Opinion