Was SMS ing my dad. I suddenly asked him some personal questions about that time, that time he decided to leave this family. I know SMS is not a good way of communication but then that's not the point.
In one SMS, he actually asked for forgiveness. I quickly replied him that since we grown up, we did not hold it against him. I think not only he is relieved, I am also relieved to have put down something that has been weighing on my heart for so long.
Then I realised, so sad, I never really talk to my father on this.