Well, nobody saw this coming!
Well... it's who he left the club with that's causing a stir:
Marissa Cooper does not look happy!
They mingled at a few London hotspots but, according to the looks on their faces, this dysfunctional duo was merely going through the motions.
David Guetta and a few other top-tier electronic artists performed at The Old Sorting Office so we don't know why Mischa and Sebastian weren't having a better time — ch-ch-check out the super-sad pics (below)!!
What's wrong, gurl?
Still waiting for your real life Ryan Atwood to come rescue you??
You don't need saving!!
You're young, hot, loaded, and stylish — the world is your oyster!
Just crack that shizz open and slurp it right up!
[Image via AKM-GSI.]