The 32-year-old British pop star was in three-year relationship with property manager Francesca Thomas, reported Mirror.
"I'm not over it. I don't think anyone is ever over a break-up. You're always going to think about them and care about them. It's like you've lost someone, like you're grieving, because they were there all of the time and then they're not," Murs said.
The "Wrapped Up" hitmaker has started drinking more since he and Francesca parted ways in September last year.
"The problem is at the moment I'm going out too much. You know when you go to the doctors and they ask you questions, they say 'How often do you drink?'