I hurt a friend's feeling!?

ok my friend and i quarrelled and i really hurt him with the words that i said. I never meant to say it. I was just so mad. Anyway he doesnt wanna admit that he is hurt. I apologized but he just kept quiet. We were really close. We have not talk for a month now cause i tought of giving him some space. How do i talk to him again and tell him not to dwell on what i said cause i really never mean it. I just wanna let him know that i still wanna be friends and to just trust me again. Help me out!! tell me what can i say to him???