You cry because he doesn't give a shit about you.
But did it every cross your mind that there might be someone crying out there because you don’t give a shit about them? There are people you don’t notice because you’re too busy taking care of your own business? Have you? 

Person likes you, you don’t like them back. You like one person, and that person doesn’t like you back. You know, it’s just a matter of time ‘till you find that person who will turn back, look at you and will love you with his own free will.