What are the signs when a man is interested in you?

What are the signs when a man is interested in you?

When you like someone, you tend to look deeply into their eyes for longer than you would with any other person. People in love stare at each other 90% of the time. When you talk, he doesn't just nod absent-mindedly, he listens. Leans in, looks at you when you talk, and is genuinely interested in what you have to say.