Justin Bieber 'Love & Hip Hop Atlanta' hook up RUMORS: Karli Redd sexy new (older) booty call? What must 'girlfriend' Selena Gomez think?

Rumors suggest that Justin Bieber and Selena Gomez are getting back together. But is the 20-year-old pop crooner playing the field too hard to actually get involved in another serious relationship?

According to the infamous gossip webloid MediaTakeOut.com, the Biebs is definitely still hooking-up with other Hollywood beauties - including "Lov & Hip Hop Atlanta" star, Karli Redd!

(VH1)

According to MTO's "extremely reliable sources," the stunning hip-hop singer/dancer/model/actress has been paying secret visits to Bieber's private ATL home.

And do Beliebers want proof? Just last week some crazy fan broke into that same Georgia home. Apparently, Biebs' security company is now reviewing security footage recorded over the past few weeks to see how the girl got passed such high-tech gear.  The videos allegedly show all the visitors entering and exiting Bieber's building.

Including Karli Redd.

An insider claims that Redd (who's in her early 40s) was spotted sneaking into Bieber's home around 1 a.m. alongside the "Believe" singer and his infamous entourage. She apparently left just two hours later.

...ew?

No photos have yet to surface online of this supposed "hook up."

Do fans believe Redd is Bieber's new booty call, or was it just a one-time thing? Wonder what that might mean for Jelena!?