<human>: Reddit, I need your help. I met this guy through a casual get together where you can meet other people in the area and network. He seemed like a true gentleman, and I really enjoyed talking to him and being around him. He would flirt a lot too. The way he looked me, he would also touch my leg and we would play fight. The way he hugged me goodbye was also flirty. We also exchanged numbers, and I was told he is single. He also made a mentioned as to he never has anyone to go with him to do things, so he normally ends up going alone. He has made mention that he would love to go and do things with me. 

I was excited to spend more time with him. Yesterday, I wanted to see if he had Facebook because I took pictures the last time we went out and I wanted to add him as a "friend". I found him on Facebook, but I saw that he had "in a relationship" as his status. My heart immediately sank. I scrolled down his timeline, and he posted this back in May. 

I don't know what to do. I'll see him again tomorrow with friends. Should I ask him if he has a girlfriend and bring it up in conversation? He has never mentioned her. He acts very single. I feel like I snooped, and I shouldn't have. Then again, why would he act so single when he is in a relationship? I feel like you can't ever trust anyone you meet. It hurts. Reddit, what would you do?

Can you condense the text into three sentences or less?
<bot>: Met guy, was very flirtatious, started talking, found out he has a girlfriend by accident through social media. What would you do?