Using break as a threat...PLEASE

I really had enough of this relationship. I'm just not happy being with this guy and i can't tolerate the way he thinks that everything that i say was trying to insult or make him feel bad.
In fact, i wasn't! i was just asking a question and stating where i said so...

Every message that i conveyed to him were mis-interpretated!

Please give me a break!
All i wanna do now is sleep and forget about this situation... it is just so upsetting... it's a death of a relationship that i thought would never end.