Bobbi Kristina Brown's boyfriend has been released from rehab.

Nick Gordon and Bobbi Kristina Brown

Nick Gordon and Bobbi Kristina Brown

Nick Gordon - who was also raised by the aspiring actress' late mother Whitney Houston - checked himself into a treatment facility after his mother, Michelle Gordon, staged an "emotionally charged" intervention on 'The Dr. Phil Show' in March.

A source told PEOPLE.com that the 25-year-old has now left rehab and has moved in with Michelle.

Nick's life spiralled out of control after Bobbi Kristina, 22, was hospitalised in late January after being found unresponsive in a bathtub at their home near Atlanta, Georgia, and her father, Bobby Brown, prevented him from visiting her.

A source previously said: "He is very distraught over what is going on. He really wants to see her. He is upset about a lot of things: her being sick, him never getting respect [from her family]."

Bobbi Kristina remains in at the long-term care facility and has "irreversible brain damage," according to her grandmother Cissy Houston.

Bobby's lawyer recently confirmed that doctors are currently unsure what kind of "quality" of life his daughter will have in the future.

In a statement, Christopher Brown said: "Bobbi Kristina's condition has changed since moving from Emory University Hospital and there has been improvement. Doctors have indicated that she will have a long life.

"However, Bobbi Kristina is presently embarking on a rehabilitation process and the quality of her life will not be known for years to come.''