Chad Johnson refuses to sign the divorce papers, according to reports, as his estranged wife Evelyn Lozada tries to move on after he allegedly head-butted her weeks after they got married.

"All I can say is, 'I'm sorry. I'm human," Johnson said on the season finale of the HBO show "Hard Knocks."

"How did I even get to this point?" he went on to say. "Somewhere along the way I lost focus. I lost something that I love. I lost two things I love because of my immature actions. I'm going to get both of those things back, one step at a time."

Sources told TMZ that the disgraced NFL star won't sign the divorce documents because he does not want to get a divorce and still believes he can win Lozada back.

Just last week, Johnson changed his avatar on the social media website to a photograph of him sitting down, with his hand to his face, seemingly in deep thought. Johnson, who is dressed in shorts, clearly displays a facial portrait of Lozada on his right calf. Under the drawing is the name "Eve."

Johnson and Lozada married in July; she filed for divorce last month after she and Johnson argued over a receipt for condoms found in the trunk of their car. According to a police report obtained by TMZ, Johnson grabbed Lozada, head-butted her, and screamed at her: "I don't give a [expletive]! I don't give a [expletive] about my career!"  Lozada then "fled on foot to a neighbor's house to get away from Johnson."

Several days later, Lozada gave an interview to Amy Robach on ABC's "Nightline" about the couple's tumultous relationship.

"I would like for him to tell me that he got help and that he is working on himself, whenever I talk to my sister or my girlfriend, I always say I want the best for him. I really do! And he is a good guy who made a bad choice. He loves football, he is very driven, a great dad," Lozada said.