Should I call him first, or wait for him to call me?????????

So... We had this lil argument with my boyfriend, it was about one chick 'cause I heard he was kissing her, but I already know it prolly wasn't the truth. That time, when I asked him about it, he hung up on me, but when I realized he wasn't guilty, I apologized by sending him a tex message the very same night. It was on tuesday and he has not answered yet. I know why he hung up- I was being mean to him, and he must be mad that I don't trust him since I'm the "bad one" who cheated before, and he said he must admit that he can't trust me so much anymore although he's trying. So... Now he's mad for me being mean and thinking he's cheating and I'm mad because... well because he doesn't wanna comunicate with me. Should I wait for him to call, or should I call first????