Jason Derulo is making plans to collaborate with girlfriend Jordin Sparks on a future song, hailing his lover as a "phenomenal singer". The Whatcha Say hitmaker, who is recovering from a fractured vertebrae in his neck, confirmed his romance with Sparks in January (12) after months of speculation the stars were dating. Derulo is taking piano lessons and writing songs for his next album as he recuperates, and the R&B star reveals he may head into the studio with his girlfriend in the near future. He tells Australia's Sunday Telegraph, "Jordin is a phenomenal singer, there's not many people that can sing like her. So we'll definitely be doing some stuff together."