What attributes does Alfredo possess in the story of dead stars?

From my perspective, the attributes do Alfredo possesses in the story are aggressive, easy to fall and fall out of love, and at the same time knows how to accept responsibility. He is considered an aggressive person because knowing that he has a long time girlfriend or fiancee' still gets a feeling for someone he just met for a short time. Moreover, it was easy for him to fall and fall out of love with someone, just like what happened with him and Julia. In a short time of seeing and knowing each other, he fell in love with her, and simultaneously he's feelings for her were like a dead star, which could fade in just a nap. Despite those negative attributes that he possessed still, he is a responsible person since he chooses to do what he has and promised, wherein he married Esperanza and loved her unconditionally regardless of meeting again his past love.