Sofia Richie went on a concert date with a guy who defs isn't Justin Bieber

And Justin went on ANOTHER date with Bronte.

By Sammy Stewart

That was quick.

It seems like Justin Bieber and Sofia's week-long romance has officially come to an end.

Well, that's how it seems anyway.

As Justin was spotted leaving da club with another mystery blonde over the weekend, Sofia was spending time with her own mysterious other.

Sofia and and ~hunky male friend~ (lol) were spotted leaving Adele's concert, without a single ounce of Bieber in sight. Since it is Sofia's 18th birthday in a few days, you'd think your BF would come and see you... right?

The last #CONFIRMED SofTin spotting was on August 13 in Japan where JB and Sofia looked SO in love.

The last we checked, Justin was still living it up in the UK with model Bronte Blampied, for the SECOND night in a row.

Cannot. Keep. Up