Dear vidalevi:
To figure out if a man likes you as in wanting to date you or acts friendly without any desire to date you, you tried asking but the men got embarrassed and left, you wrote. So asking didn’t work for you. Then you watched to see if a man who was friendly to you was friendly to everyone else as well- this is another way to find out and you did well with that method: observing a man’s behavior with others.
What I would do if I was you, when a man is friendly to me I will be friendly back. I will assume he is friendly without a desire to date me. Every time he is friendly to me, I will be friendly in return. And if you pass by him and he doesn’t see you, I would be friendly first and say: hello/ how are you and the like.
And then IF the man suggests to have coffee with me or lunch, and I like the man, then I will say yes and have coffee or lunch with him, talk and be friendly. Then if he asks for another meeting, fine.
After one or two meetings that he initiates, you can initiate a third coffee or lunch meeting.
Then IF he asks to see you in the evening, accept and go on the date with him.
anita