Do you think this guy called me on purpose to hear his conversation?

I'm dating this guy, and he hasn't had contact with me for awhile. He's mad at me for some reasons, but very minor, and he won't talk to me. He also has a hard time expressing himself. But last night I got a phone call from him in a bar setting, and it was almost like he dialed my number accidentally, and I could hear his conversation. He was talking a lot about our issues, and me. Like the exact reasons he's avoiding me right now, was what he was discussing. But it was like a one way conversation, and I didn't hear another person talking. Then he went on to talk about me, and it was all good! But what are the chances he accidentally happens to dial my number is almost impossible. I'm not on his call list, so it's not like he could have hit a button, and if I was on his contact he would have had to go all the way down to L for my name. And his phone wasn't muffled, so it certainly wasn't in a pocked. He mentioned to me once, he has a hard time expressing himself. I wonder if it was intentional, and that's what he was doing? I wonder if he wanted to hear me on purpose? Possible it was a set-up?