50 Cent has filed papers in Family Court to make the child support arrangement he has had with his son’s mother a formal process for the first time in their relationship.

NYC sources claim that 50’s BM Shaniqua Tompkins began to get more demanding with the money.

“It was just getting so out of hand,” a friend of the rapper tattled. “It was driven by greed. He felt it was necessary to get a court order making clear just what his responsibility is. He took matters into his own hands. It’s usually the woman who files. But he wants to do the right thing.

“50 has always provided for his kid. His son’s mother is now making unreasonable demands, which seem to have no limits,” the source goes on.

50 lived with Shaniqua for four years, they broke up five years ago, but 50 bought them a house in an posh section of Long Island “so Marquise could be in a good school district,” the snitch continued.

“He’s paying a lot of child support. He takes [Marquise] on vacations. He just took him to L.A., where they saw Eminem together,” said the friend. “He met Justin Timberlake and Timbaland in Miami. He took him to the NBA All-Star Game in Vegas. He sees his son very frequently. When he’s on the road, he brings him out.”

Cindi Berger is 50’s publicist, she said of the court matter: “Curtis puts his son’s needs first. His son is well loved and taken care of. Anything else is a private family and legal matter.”