Niall Horan is reportedly dating Joe Jonas' ex.

Niall Horan

Niall Horan

The 22-year-old One Direction singer spent the weekend in Los Angeles and Las Vegas with former 'America's Next Top Model' contestant Jessica Serfaty, who split from Joe last month after a brief fling.

A source told The Sun: "Niall and Jessica have loads in common and enjoy spending time together.

"He met up with her at the UFC fight in Las Vegas on Saturday before inviting her to the football in LA the following night. They chose seats next to each other and were flirting in the box. Niall even pretended to pull a wrestling move on her for a laugh.

"They seemed to be getting on really well."

24-year-old model and actress Jessica has a young son with her former husband Ididia Serfaty.

Niall was last linked to Selena Gomez and brought her to the 'X Factor' wrap party in London in December where they were spotted kissing.

A source said: "They spent the entire night locked together and were very touchy-feely.

"They kissed in a corridor. There is no doubt there is something going on between them."

However, Niall has spent the past few months travelling around South East Asia during his One Direction hiatus and Selena has since been linked to sales executive Samuel Frost.