Friends Hate Christina Aguilera’s New Beau Matt Rutler

Christina Aguilera’s Rebound Guy isn’t winning rave reviews from the singer’s tight-knit circle of friends, which includes socialite Nicole Richie and celebrity spinner Samantha Ronson. The pop powerhouse has been indulging in a spot of post-divorce partying since calling it quits with soon-to-be ex-husband Jordan Bratman last fall, but her friends say the messy new lifestyle has less to do with her split and more to do with her new man.

Xtina’s fella is a “bad influence on her” and “never tells her to slow down,” an informant tells PEOPLE Magazine.

Friends are concerned that Matt Rutler is no good for the now-single mom, who made headlines in the past few weeks for passing out at a party, fluffing the lines to the National Anthem at the Super Bowl, and nearly tripping during a tribute to Queen of Soul Aretha Franklin at the Grammys.

That disapproval likely extends to Bratman — who had, until recently, remained at the family’s Beverly Hills mansion after his breakup with Christina in order to remain close to the former couple’s three-year-old son, Max. An awkward living situation made worse when Rutler reportedly moved in.