3. He might get angry too: One of the most common emotions that is biologically rooted in men from the past many centuries is aggression. Yes, If you block a guy, he starts to feel ignored and dejected, which might at times cause anger in him. Moreover, if the guy thinks that you are playing mind games, or if you are intentionally blocking him. BUT, not that I should care what he thinks, I'm now worried that blocking him was too dramatic and that he thinks I am crazy. I also left a lot unsaid (on purpose, as I felt he wouldn't really care anyway) that I am itching to say. I thought that blocking him would be a cleaner break and make things easier, but rather than sitting around.