Patrick, is a 30-something man with no ambitions. He's overwhelmingly boring. He'll turn down any remotely interesting topic of conversation. If you continue to talk about something you're interested in, he will just walk away right then and there.
He holds no opinions about anything, and speaks with the enthusiasm of a Wikipedia article.
He's hard to talk to, not because he's mean, because he's not, but because he's just so boring and will leave if the conversation gets too interesting.