Fans of Keeping Up With The Kardashians will recognise Adrienne from the show (or from Disney's The Cheetah Girls) and you might remember that Adrienne ended her relationship with Rob because he cheated on her.
Fast forward a few years and Rob is with Rita. But then he went on a Twitter rampage against the British singer claiming that she cheated on him with up to 20 other men.
Rita has since denied his claims and revealed that she ended the relationship.
We have to say the girls are having the last laugh as Rob has gone on to put on loads of weight while his ex's look absolutely stunning!
Think the girls were bonding over their ex?
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