So I was dating about 8 months ago a guy that I really liked. For some reason we both fell off we stop talking , but overtime we started texting each other liking each other's picture on IG.  Okay here is the problem so I went to an event and I had no idea he was going to be there so he walked over to say hi to me. I was so surprise I had no idea I was going to see him there simply because it has been a while. So that same night I decided to text him and he said to me in a text "you was looking at me stupid" so I said to him I apologies you caught me off guard and he said "Mmmh We know" and I wrote "we know nothing" and he said you right, I do. My question is wtf is his problem I mean why would he say that to me?