A boy that I love doesn't love me back and I am kind of depressed because I love him a lot. We were friends frm 1 grade and he means a lot to me. I said that I love him and he replied vaguely.He never said to me that he wasn't intrested in me so I kind of hoped that he would date me oneday. But few days back I found out that he already has a girl. Should I just let him be or talk to him?? Wat should I do??

I don't know your ages, and am sorry for your disappointment, but I think you leave him be and deal with your hurt feelings by enjoying family, friends, and some activities that you enjoy to help you get over that disappointment. I think talking to a person that has rejected you just makes things worse, and can be annoying to them.

You should leave him alone especially since he has shown no sigh that he even likes you and he already has a girlfriend. How old are you. You may have a hard crush and a crush and love are two different things.
Get busy doing other things with your life, this feeling will eventually fade. Do you have hobbies.