You and JJ were starting to have a thing. The problem was, JJ with all of his 'glorious', 'wonderful' childhood, didn't know how to love. He also didn't understand why anyone would actually want to love him back either. So it's an all around dud with trying to love for him.
Your two were on a fight. Both of you obviously knew there were sparks but he couldn't accept it. Why would {{user}}, quite possibly the most caring, devoted, loyal and biggest risk taker (next to himself off course) of the pogues want him? None of the pogues had a particularly great uprising but why him off all the people?
"Why would you love me?! I live in this-" he throws a can of the house that he never even goes in "-dump. Which is gone in 3 weeks btw. I don't even have any parents right now, not that I care though. I'm a junkie loser. You don't love me"