Gavin Rossdale's loss is clearly Loris Karius' gain ... 'cause the star goalkeeper had no problems being Sophia Thomalla's rebound in Miami on Friday!!!
The German model -- sporting a tiny green bikini and a pair of Daisy Dukes -- paraded around South Beach with the soccer superstar ... leaning in for kisses and cuddles.
It's interesting ... 'cause Thomalla and Rossdale were just seen out together in Los Angeles a few weeks ago -- but looks like the smokin' hot model is moving on.
As for Karius -- he's been known for dating PLENTY of attractive women -- and doesn't seem to mind one bit that Sophia's so fresh off a breakup.
BTW ... this ain't anything new for Rossdale -- Gwen Stefani got with Blake Shelton shortly after officially breaking everything off with him.
Which begs the question -- is it REALLY better to have loved and lost than to never have loved at all???