When you're dealing with people this dumb, you have to be really blunt and obvious. This means you either have to tell them outright what happened, remove yourself from the situation, or do something else.
Madness string 102160
He and I started talking because I got his phone number from a mutual friend and called him just so I could blast the Pokemon themesong into the phone at him. He responded by saying I was awesome and we should hang out.