How can you tell if a guy likes you or if you like a guy?

There are many ways to tell if a guy likes you. If the flirts with you or tries to impress you then he probably likes you.He may also like you if he talks to you a lot or comes up with excuses to be with you. Some times i think a guy likes you if he doesn't tell you who he likes or is constantly asking you how you like. If you like a guy you can tell you like him if you blush a lot when you are around him and if you constantly think or daydream about him and try to see him as much as you can. Even if he has a girlfriend don't worry because he may also like you too. My main advice is NEVER give up on a guy you really like.