Justin Bieber and Sofia Richie Are Over, Source Says Relationship 'Just Fizzled Out'

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Perhaps this news comes as little surprise -- you may want to take a seat, just in case -- but Justin Bieber and Sofia Richie are over as a couple.

A source close to Bieber confirmed the split to ET. "Nothing serious or dramatic happened. Just fizzled out."

WATCH: 11 Things You Didn't Know About Sofia Richie

It sounds like a very undramatic ending, compared to the drama-filled six weeks of the relationship. The "Cold Water" singer began palling around with Richie, then 17, in early August. The two were spotted hiking in Los Angeles before jetting off to Japan together, where Bieber played two shows. A few weeks later, they headed to Mexico for a romantic getaway to celebrate Richie's 18th birthday.

But it wasn't long before the Belieber backlash against the up-and-coming model prompted Bieber to threaten to delete his Instagram account. "I'm gonna make my Instagram private if you guys don't stop the hate this is getting out of hand," the singer wrote, captioning a since-deleted photo of he and Richie together. "If you guys are really fans you wouldn't be so mean to people that I like."

The drama gathered steam, there was a heated back and forth with ex-girlfriend Selena Gomez, and then Bieber made good on his threat and deleted the account.

LOOK: 13 Times Justin Bieber and Sofia Richie Proved They Were Fashion Soulmates

Richie, who is Lionel Richie's daughter, dished on her time with Bieber in a recent interview, saying she had a "special relationship" with the pop star. "Justin is very easy to talk to and that's hard to find with people in Los Angeles."

The stylish couple may have been fashion soulmates -- but, sadly, just not actual ones. Take a look back at their best twinning looks in the video below. RIP our dreams.