Justin Bieber's father Jeremy Bieber is reportedly severing a seven-year relationship with his partner Erin Wagner to party with his son.

A Daily Mail exclusive reports the 39-year-old father of the pop star will share custody of two youngsters Jaxon, 4, and Jazmyn, 5. But the main bone of contention from Wagner appears to be the fact Jeremy would prefer to be Justin's friend than a father figure. According to the Daily Mail's source:

"Justin hitting the big time in the way he has is an absolute dream come true for Jeremy and the temptation of being able to travel the globe, living like a superstar was too much to turn down. 'Erin was always going to take second place to that. They are still on good terms for the sake of the children and she still has a great friendship with Justin, but their relationship has broken down. 'Jeremy has the opportunity to party with beautiful girls in every city in the world. He was never going to let anything get in the way of that.' The source added: 'The fact Jeremy cannot seem to maintain a relationship is just another sign of how flaky he can be. He really isn't the kind if role model Justin needs around him during this difficult time.'

Although the publication reports Wagner and the elder Bieber had been having some difficulties the proverbial last straw was Jeremy Bieber being with Justin when the singer was arrested in Miami Beach for driving under the influence. Some had even speculated the father was actually abetting Justin by blocking the street in an SUV enabling the musician to drag race. After posting bond, Justin and Jeremy were seen partying hours later.

On Jan. 16 Wagner tweeted the following with a subsequent tweet on Jan. 19:

Jeremy was also seen with Justin at a Toronto Maple Leafs game on Dec. 29, hours before Bieber would be involved in an incident where he allegedly assaulted a limo driver in Toronto. Following the Miami Beach episode Jeremy Bieber was with Justin on a Jan. 31 flight where Bieber was accused of being verbally abusive towards a flight attendant and smoking pot. In the days leading up to that incident though Wagner tweeted the following, not naming names but definitely revealing not all was well:

Jeremy Bieber has had some run ins with the law previously according to Justin's mother Pattie Mallette. Mallette's autobiography "The Only Way Is Up" claims Jeremy was in jail the day Justin was born (March 1, 1994) and cheated on her during their engagement. The couple broke up before Justin was a year old.

A source told the publication Jeremy "has always been a bad boy" and, while loving Justin, "wasn't mature enough to be a responsible parent and his lifestyle meant he couldn't be there for him like a father should be."

Although he's not in the current legal trouble his son is in, Jeremy Bieber had his run-ins with the law. In 1997, he served 90 days in prison for assault while in 1999 breached probation and served 21 days in jail.

Last year, Justin also purchased a farm house outside Stratford, Ontario for a reported $850,000, which the singer uses when he's back in Canada. The musician also reportedly gives his father $50,000 allowance to maintain the residence, a place Jeremy and his friends refer to as "the ranch" and is often a hot spot for parties in the area.

As for Jeremy Bieber, he has occasionally tweeted his disgust with the media and stories concerning his son. On Jan. 24 he tweeted the following:

Justin, who will celebrate his 20th birthday tomorrow, has finally made the cover of Rolling Stone magazine, albeit perhaps not in the way he once thought. Justin is shirtless (of course) beside the headline "Bad Boy: Why Justin Bieber just won't behave." Rolling Stones also places blame on Jeremy Bieber's shoulders, reporting a source that said "'His father's not a great influence. They're almost not like father and son — it's more like two best friends.' The magazine also pointed out that Jeremy goes to strip clubs with Justin, "enjoying the overflow of his son's parade of strippers"

Justin's next court appearance is March 10 in Toronto regarding the alleged late-December assault.