Friend issue !?! plz help?

well here's the thing... i was bestfrnds with this guy! then one day out of the blue ! he calls me and goes like u girls r so untrustworthy and i dont give a daimn about anyone INCLUDING U ! and , i KNOW myself ,i know that i didnt do anything wrong IM SURE ! i didnt do or say anything bad about him! i mean cmon he was my bestie why would i say a bad thing or give out his secrets !? i was shocked when he said that ! and the fact tht he didnt even come ask me if it's true or not , made sure and listened to the other side which is ME ! he choosed to believe what people told him ! i asked him what's wrong he just got even meaner and kept saying "nothing"and "u r just like everybody else" ! im really shocked and DISTURBED ! what should i do to make him REGRET IT?! he lost such a good frnd and a SISTER ! and i want him to REALIZE THAT !