If you love someone so much and he say he can't be together. Because I keep talk about stupid thing and I need him back what I can do about that

Leave him alone, and get someone who appreciates what you say! You can't just be stuck on someone that's not stuck on you, can you?

GROW UP! End of story

What stupid thing were you talking about with him?

Yes, do you keep hounding them about the same thing over and over ? Can you give us more details