We already knew Paris Jackson and her brother Prince Michael were fighting prior to her hospitalization for an alleged suicide attempt on Wednesday morning, and now new details have emerged about the strained relationship between Michael Jackson's two oldest kids.

Paris recently began spending time with their biological mother Debbie Rowe after several years of estrangement, and apparently and her older brother didn't approve of the new relationship, reports Us Weekly.

"[Paris and Prince] were always so insanely close until Debbie came back in the picture, and Paris wanted to get close with her," a source tells the mag. "Paris wanted her mom in her life, but Paris was younger and Prince remembers all of the awful things Michael told them about Debbie. Prince feels Paris is betraying their father by getting close to Debbie."

"Paris made her own decision to get to know her mom and found she really liked her," the source continued. "She loves the stories Debbie has told her about her dad." However, Prince was not a fan of the newfound bond between Paris and her mom. "He has these massive fights with her and calls Paris a backstabber for getting to know 'that woman,'" the insider reveals. "Paris and Prince fight all the time, and it really hurts Paris as they used to be close."

Another source of stress for Paris is the fact that she is "terrified" of testifying at the ongoing wrongful death lawsuit the Jacksons are bringing against concert promoter AEG. Paris will likely be asked about her father’s health and state of mind before he died, and the events of the day he died. Now it's being reported that AEG claims to have "irrefutable" proof that Michael is not the biological father of Prince or Paris, which they wish to bring to court. The Jackson family lawyers argue that the issue is irrelevant, and AEG is just seeking to embarrass the family, but that has to be yet another thing weighing on poor Paris.