Nick Gordon 'tried to save' Whitney Houston

Nick Gordon's mother claims her son constantly feels guilty because he was unable to save Whitney Houston's life.

The 25-year-old star - who is believed to have entered rehab after his mental state seemingly spiralled out of control following his girlfriend Bobbi Kristina Brown's admission to hospital on January 31 - is still struggling with ''guilt'' that he couldn't save his partner's mother when she was found unconscious in her bathtub three years ago.

His mother Michelle told TV star Dr. Phil McGraw: ''As we sit here right now, my son's life hangs in the balance. When Whitney was found, he administered CPR to her and called me as he was standing in front of her saying, 'Mom, why couldn't I do it? I couldn't get air into her lungs.' He won't let go of the guilt.''

Michelle's claims contradict Houston's autopsy report, which stated that the singer's assistant and bodyguard pulled her from the bathtub and requested that the hotel call emergency services.

Gordon has been banned from visiting Bobbi Kristina - who, like her mother, was found unresponsive in the bath - by her father Bobby Brown and Michelle says her son is at ''breaking point'' as a result.

Michelle - who speaks to Gordon every day - said: ''Nicholas is at breaking point. He cannot take too much more of not being able to see Krissi. He blames himself. As we sit here right now, my son's life hangs in the balance.'' Dr Phil flew to Atlanta on Wednesday to assess the troubled hunk after his family begged him to help him following his disturbing outbursts on Twitter in recent days.

During the meeting, Gordon reportedly broke down and even threatened to kill himself if anything happened to Bobbi, 22. The intervention will air on Dr. Phil's show on March 11. Bobbi Kristina is currently fighting for her life in a coma but seems to be showing small signs of improvement.