Love sick

Y is it two person can say so much hurtful words to each other? Is it becoz of love? That they cant do anything but show this sort of love?

For me,
Im so mad and sad that hurtful words keep coming out from my mouth. Yes I am evil and words are damn painful but I dont mean them. I love you so much that it hurts me to the core. Cny is coming and Im sick as ever and I wish he was by my side. I can get so angry and so in love at the same time to a point i think im going nuts.

Dear god please help me.
I cant do this anymore.

-S-