Should i tell him?

haiz...should i tell him what im thinking now..should i ask him not to wait for 4 me..
i feel that im so selfish i don't be like this to him
his a good guy i shouldn't done this to him.....right?
but just so hard to open the mouth and say something like that
but i just so affraid he realize by his own that will be more worst then i tell him myself..
i just don't wanna hurt someone i care i really care what he feel...
but i scare...i scare he will be leaving me after i tell him what is going on now..
im a bad girl..i really mean it...