Sorry, i really don't know what can i do anymore

I'm Sorry, you deserve someone who is so much better. you deserve so much more, and i feel that i cant give you anything but pain...

I walked out not because I don't love you no more, but because i feel very guilty to spoil your nights over and over again...

I'm truely a bastard in disguise.

What can i do? How should i feel?
I'm so tired......
4nights with literally no slp ='(
and now, a broken heart.