The 31-year-old star and property manager Thomas, 26, have called time on their relationship following a holiday last week, with Murs struggling to balance his personal life with his hectic working schedule, reported Female First.
"The split has just happened and it is very raw for Olly, he still feels numb. He always worried that his relationship would struggle because he'd always put his career first," a source said.
As well as managing his pop career, Murs is also currently serving as a presenter on "The X Factor" in Britain, which has further restricted the time he's been able to spend with Francesca.
Olly has kept himself busy with work to distract himself and took himself on a lads night out to see One Direction. But he looked upset during the gig, like his mind was elsewhere.