Is Britney Spears ready to make her third trip down the aisle?

Sources tell Page Six that the troubled singer wants to marry her photographer-turned-boyfriend Adnan Ghalib, even though he is still married.

The source also claims that Kevin Federine, Britney's second husband, is worried about the singer and her plans to go through with another marriage. He allegedly "flipped" out after Spears told him she was going to marry Ghalib.

This would be marriage number three for Spears, who married childhood sweetheart Jason Alexander for 55 hours in Las Vegas, and tied the knot with Federline in October 2004, before the divorce two years later.

Spears and Ghalib have been inseparable for the past several weeks, showing up at convenience stores, restaurants, church and even the courthouse together.

The pair also recently took a short vacation to Mexico. Ghalib reportedly wanted to obtain a quick divorce from his wife south of the border, according to a source.

Many gossip sites and blogs accuse Ghalib of taking advantage of the 'Gimme More' singer, believing his intentions toward her are only to sell intimate photographs of the two together.

Meanwhile, Britney is mired in a battle for her children with Federline.

The fallen pop star recently lost all visitation rights to her two sons, Sean Preston and Jayden James, after failing to show up to the latest court hearing involving the custody case.

Spears was to testify on Monday about her four-hour standoff with police on the night of Jan. 3. However, she never made it to the stand. Spears was seen driving around the courthouse, eventually driving away after 30 minutes.

During the standoff, Spears locked herself in a bathroom with one of her young sons, after refusing to give the kids back to Kevin Federline's bodyguard. After a long dispute with police officers, Spears was restrained on a gurney and taken to the hospital in an ambulance.