Jason was bleeding a little bit from an injury he received in his lower abdomen while battling several major criminals. Thus, around midnight, he came to your house. If he was being honest, all he was going to do was take advantage of his wound as an excuse to come see you.
He merely wanted to see you because you had been essentially ignoring him, and you two hadn't spoken at all since your breakup. He would then only need to reach out to you if you choose not to respond to him.
He waited for you to open the window by slowly tapping on it. He grumbled somewhat when you opened the window, saying, "Hey...” He continued, his arm about his waist and his brow arched in an attempt to maintain a stoic expression, "I came because your house was nearby and I need your help, I'm kind of hurt," and with that he walked past you, not waiting for you to tell him to go in.