Is this not common courtesy?

I drove all the way to my boyfriend’s house because we had plans to hang. When I get there, I go in his house to talk with his parents and he doesn’t come out. I wait another 5 mins nothing. I texted him asking where he was. He texted me outside. I go outside, and he comes out from the house where I just came from. My thing is why say he’s outside if he was inside the whole time while I was in there? Like idk common courtesy to me is if someone drives to ur house and u see that they’re there, you come out. And yes he heard me because his room is the closest to the living room. He told me himself that he heard me.