I met someone at a friend's wedding a few weeks back. He seemed cool and I sent him a message on Facebook recently, and we have been talking. However, I find him arrogant and we don't seem to have much in common. He's my close friends' personal trainer though, and I feel like it's kinda rude to just stop replying ? He hasn't asked me out or anything, just back and forth messages. What would you do to stop things ?