A disturbing video on Facebook of a man, Sbusiso Lawrence, allegedly confessing to killing his girlfriend has sparked outrage on social media.In the video, Lawrence appears to be speaking after the incident, justifying his actions while displaying visible blood spots and scratches on his face. He claims to have endured abuse in the relationship but says he eventually became exhausted.“You’re all going to call me heartless. I tried,” he said in the video.“I worked so hard in my life to satisfy a woman, to make her happy. I gave it my all. I worked tirelessly, sacrificing so much…