Selena Gomez's on-again-off-again relationship with self-proclaimed bad boy Justin Bieber might just cost her a close friendship with her famous BFF Taylor Swift.

Selena Gomez Parties With Justin Bieber?

A source told Hollywood Life that Bieber and Gomez's relationship has put such a strain on the Come Get It's singer's friendship with Swift, that they've decided to go their separate ways for now and "take a break."

The insider said, "They did not leave on good terms - it's very icy. They both decided they needed space. Things have been going downhill between them for a while. Taylor can be very opinionated and controlling, and that's been getting on Selena's nerves."

Justin 'Feels Bad' About Selena Going to Rehab?

But it's just not Swift's supposed controlling ways that are splitting the two friends up. Apparently Swift gave her an ultimatum, which didn't sit well with Gomez. To make matters worse, Swift isn't the only one close to Gomez who against her potential reunion with the All That Matters singer. Gomez reportedly didn't tell her family and friends about her choice to get back with him.

The source continued and said, "Selena kept this from everyone because she knows how much her friends and family disapprove. They think Justin's bad news, and would have tried to stop this."

That didn't stop Gomez and Bieber from meeting up together in Texas on March 14. They spent time together at a dance studio. Bieber even tweeted out a sultry video of the two dancing to together to John Legend's Ordinary People and quickly deleted it.

Gomez is said to have done a quick stint in rehab because of Bieber. Check out their video below: