If LiLo hears about this she'll need another month at least in the Betty Ford Center!

A source very close to both Christina Aguilera and Samantha Ronson tells X17online exclusively that the singer and the DJ are taking their friendship to the next level.

Ever since Samantha went to Cabo with Xtina, "the two have been inseparable," says our source. "I've seen them hanging out together. Christina Aguilera really lets down her guard around Sam. They're very comfortable with each other."

The pop star was even seen leaving Sam's place late at night earlier this week AND she stopped by The Roxy on Sunday to see her new favorite DJ spin.

In June of this year, Xtina herself even told Company Magazine that she is "attracted to women."

The singer also said the following to Out Magazine in May: "My husband knows that I get into girls. I think it’s fun to be open and play."

Is it a coincidence that Aguilera suddenly split from Jordan Bratman so soon after her Cabo trip (where she got even closer to Samantha)?

Our source also reveals that the twosome's relationship is nothing like the one Samantha had with Lindsay Lohan. "Their relationship is different because Christina doesn't create the kind of drama that Lindsay did." Ouch!

Think these two girls are a good match? Or is Lindsay the only one for Sam?