mistake...

hola...I believe I have made a seriously terrible mistake (how should I write it to make it sounds worst?) duh...
because of my decision somebody feels he's being left out. I was emotionally unstable when I made the decision. Huh, now I am blaming the the emotion....
Now I am feeling guilty and even worst the feeling of " I've told u that" urghhh... why didn't I listen?
hmm...what should I do now...mistake was done and breaking somebody's heart...important person? yes, he is important.
teng teng teng...