How could i be so stupid? =(?

i am ex best friends with this girl Danielle and danielle is dating the guy i like montana and she nos i like him and that i am redy 2 kil myself and has seen my cuts many times b 4 well tonight she told him i liked him and he was talking 2 me and sed he new i liked him and he doesnt like me he sed i am just a dum *** and every1 hates me i dont think he would car if i died but wen he sed that 2 me me eyes filled with tears and my heart hurt real bad =( he was my life i cared about him i helped him i was nice 2 him but he stil did that 2 me =( i sont no wat to do i hate life... WHY WOULD SHE DO THAT?..... WHY WOULD HE DO THAT? HOW COULD I BE SO STUPID?