The reasons that led to their separation remain unknown, but the Italian media says that the two had some disagreements in late January, right before the first IRTA test at Sepang, in Malaysia.
No new photos of the two together appeared on social media websites recently, apparently confirming the separation.
In 20, de Rossi played the high-strung and controlling Veronica Palmer on the ABC show Better Off Ted.
In 2011, she appeared in Better Off Ted cast member Malcolm Barrett's music video for "Revenge of the Nerds," spoofing her character of Veronica in a cameo alongside other cast members of the cancelled series.
The two met on the very Moto GP grid back in 2007 at Vales' home circuit at Misano.