beta
I kind of get what Leo's thinking. Yes, Leo is immature and not very emotionally intelligent (in regards to himself AND others) but...
He thinks JJ hates him. JJ hasn't helped this misconception with the way he pushes Leo away, and also leaving to another job clearly wanting nothing more to do with Lombardi. Plus, why would Leo cling to JJ when it's clear that there isn't room for getting back together, when everything happened so randomly (for him)? JJ knew that Leo was like this—he's been like this since the beginning.
I'm happy to get others' thoughts on this.