Most Helpful Guy
It means his attention span is short. It is not uncommon for people his age, it's just the way we are wired. Call it instincts maybe to populate the earth with their offspring. But don't worry because not all guys are that way, you just met one that is.
Most Helpful Girl
No one breaks up for no reason. By the sound of the rumors and what he told you, it sounds like at this very moment in his life he cannot focus on having a relationship with you.
Are you asking him for a little more of his time? Do you demand things from him? Do you always want to be around him? Do you get mad at him or snap at him? Do you constantly call or text him all day? Do you get angry at him for whatever reason? Guys want girls that have their own hobbies and their own friends. They want girls that feel happy around them and trust them when they are not there. Guys also want to hang out with their families and their friends without having you there. They like their time to themselves. If you are not giving him this then he may feel like he's wearing you like a scarf on the neck... tightly. Just sit and think about it tonight and for the next few weeks. Have fun with your friends and family for a while. If you give him space now and you truly find that maybe you were too much to handle and try to work on that then he may miss you and decide to date again. But you really have to look at your actions first. That's why... think about it tonight.