Chasing Shadows in a crowded Hallway

"I saw my ex in a crowded place, and somehow I knew I needed to talk to him. I walked over and said his name, but he acted like he didn't hear me. I followed him through a hallway, calling his name again. He kept walking without looking back. I felt embarrassed because other people were watching, even though nobody actually seemed to care. Then suddenly we were sitting at the same table. I was trying to tell him something important, but he was staring at his phone. I reached across the table and touched his arm, and he finally looked up. For a second I thought he was going to say something. Instead, he stood up and walked away. I found myself outside a house I didn't recognize. His car was in the driveway, but when I knocked on the door, nobody answered. I woke up with that awful feeling of being ignored, even though I knew it was only a dream."