Was dating a guy at work. We were friends before and got on so well. I said let's be friends and he became distant. Now it's awkward at work. I try not let it be. We do drinks rounds and he offered me one and I thought oh good he's ok. I offered him one he didn't even respond shook his head. I sat down and then he got up to make his own. He knew I could see him. It's so childish. He didn't do this to anyone else. I know it sounds so pathetic but it's making me work life hard. I feel emotionally drained when I get home and just want to cry. I wish I could rewind and we could just be friends again. AIBU to be annoyed/upset at his childish behaviour?