Why does it hurt so bad?

Hey....sorry if this makes no sense at all but im not really n my right state of mind....me nd grant broke up nd idk what to do...i feel sick nd like crap nd...i just idk i tried to get him to stay i really did..i fought to keep us together nd i still lost him....mayb i shoulda just given up when he broke up w/ me..... Idk what to do nymore....first he broke up w/ me nd wanted to be friends.. Then at one point he wanted time to think then he wanted to be able to date another girl while dating me then he just wanted to be friends so idk nymore nd he complained about only seeing me once a week... Thats not my fault! Should i have fought harder? He said still he loves me but doesnt kno what to do...or not fought at all? I usually dont when breaking up and the one time i did it exploaded back in my face.... i just want this terrible day to be over.....im gunna go pass out..to much emotional pain nd everything hurts