I have liked this one guy for a long time and I thought he liked me too, but then just recently he told me and a few other of my friends he has a girlfriend. At first I was sad but I decided we would just be friends, but lately he seems even more flirty now that he has a girlfriend which is weird. He used to be shy and weird around me, but now he's more open and he's always smiling. I just don't know what this means, why is he more closer and open now then he was when he was single. IDK what to do... Guys what does this mean?