What does it mean if a guy gets jealous and trys to impress you or down the other guy that you talk about?

it means you should totally shouldn't like him anymore because he shouldn't be jealous... or that he has feelings for you and wants you to be talking more to him than other guys. :)

nah that's wrong! its a good thing for a boy to be jealous!

That means the guy you like,likes you back and probably wants to go out with you and you should go out with him!