Read the man’s body language. The man either wants a business relationship, a friendship, a fling, a dating situation or no relationship. You have to know the cues for each one. If the man wants a business relationship, you will get a formal firm handshake as you greet. There will be directed eye contact, usually at the end of phrases. The man will keep a distance from you, but will be facing you as you talk. A man interested in friendship will make eye contact, but of limited duration. The man will turn toward you sometimes, but not throughout the entire conversation. The man will seem interested in what you say when you talk about normal subjects like sports, and there will be some smiles, but not ear-to-ear smiles.
Look for the big smile. If the man is interested in a fling, he will get too close too soon. He will come right next to you and may seem to invade your personal space. He will keep eye contact too long for comfort, and may touch you even though he doesn’t know you. Expect him to stroke your face lightly or to play with your hair. The key to the fling is that you will most likely feel uncomfortable and the man likely won’t respect your boundaries. If the man is generally interested in dating you, he will turn toward you during the conversation. He will look into your eyes longer than a friend would but not as long as the fling man. He will have big smiles that show he is generally interested in the conversation and in you.