Please settle an argument at work.
I reckon there's a lot of differences between how a man who is not interested in a woman will behave, and a man who secretly has feelings for a woman but is hiding them (either because he has no intention of acting on them or because he is afraid of rejection) will behave.
My work colleagues think there's no difference as if the man has no intention of acting on his feelings than he's technically not interested so won't act interested.
What would you say are the differences you would expect to see?