'Talk Dirty' hitmaker Jason Derulo has revealed that he's struggling to think of what to buy girlfriend Jordin Sparks for Christmas. 

Speaking to Britain's Daily Star about his relationship with the 'No Air' beauty, Derulo explained that he is trying to get his shopping done, but he just doesn't know what she would like for a gift:

"I haven't got anything yet for Jordin. I'm a typical guy and I need to do better than that."

"I got a bunch of stuff for the kids so I'm not so bad. But with your girlfriend you run out of ideas, I don't know what to do!"

Earlier this month, Derulo told Digital Spy that Sparks is currently working hard in the studio and she's putting the finishing touches to her forthcoming third album: "She's getting in the studio, she's doing a lot of acting stuff at the moment which has delayed things a little bit."

"Give it time, the album will come out. It's almost done - she's just putting some finishing touches on it. Everything needs to line up with the record label first and then she'll get it out."