Good old days

Weeks ago , i still have a good friend but days ago ..I've lost one.
This incident shouldn't happen at first , but it get things too serious.
It happens when i first up to look for my friend CH to ask him to guide me in my statistics revision for coming test 2. My good friend which is the room mate of CH , so when i finished up my revision i have talked with my good friend there. at first , we telling jokes but he said something funny.
He said : You come up here do what?
I said : Ask CH to teach me statistics la..
He said : Then go ask la
I said : i already finish asking
He said : Then why u still here ?
I said : Ok lo , i go lo..( I thought he was joking so i gave him chance to make it as joke but too bad he wanted to be serious)

So i just get back to my room, the next day he trying to be normal to me. He used to talk to me like the good old days. Too bad , i already got a scar in my heart.
Things you've done wrong , you can took it back but when words you said wrong , you can never took it back.
Be careful when u talk... It's not that i don wan forgive him , it is he doesnt want to apologise on what he did ...not even action. So how could i forgive someone like that? I just have to give up this good friend.. Before he used to be good+ friend= good friend but now he is goodfriend -good = friend. When situation reaches this stage , it is hard to back to normal. This is the critical level of myself. ..