The Black Dot That I Have Create Today...

Oh God ...
I ask for your forgiveness ... I'm have hurt my lovely  friend, I have make life difficult for him. Since I have been friends with him, he has sacrifice a lot towards me, time and everything to me. He was always there for me when I was in distress even when I'm happy. But I do not have any for him when he was grief. I always selfish. I've seen a lot for him to feel sad with my attitude. Tonight I have make him disappointed to me. But he still stand with my attitude. I really-really sad .. really-really angry with myself. What should I do?
Oh God please show me the the right way... I do not want trouble and frustrating the person that I love ...

M * m, K ** * I Love U because of Allah...
May God give me the right guide.
Amin.