Although Seal has appeared easy-going in public appearances since Heidi Klum filed for divorce from him, his ex-girlfriend, Tatjana Patitz, is warning Heidi not to change her mind. Seal, who has continued to wear his wedding ring, has said in interviews he doesn’t want a divorce and is hoping Heidi will change her mind. But Tatjana, who dated Seal for almost a year, told In Touch, “He is not a nice person. He has anger issues. He’s definitely not someone whom I think fondly of now.” She told the magazine that Seal is a “selfish, immature man who is prone to frightening rages.” She says although she wasn’t certain, she was suspicious that he’d cheated on her during their time together, which Seal seemingly backed up when he admitted he’d been unfaithful during many of his relationships. At any rate, Tatjana hopes Heidi isn’t considering taking him back, warning, “There are children involved.” An insider says Seal has been praising Heidi in public because he wants to protect his reputation with fans so as not to harm his record sales. “He has a tremendous ego,” the insider revealed. Heidi, on the other hand, has not mentioned Seal at all, reportedly in an effort to protect their four children.