Jennifer Lawrence and Nicholas Hoult are back together.

The couple - who split in January after two years of dating - had remained friends and after spending time together on the set of X-Men: Days of Future Past and recently, they decided to give their relationship another chance.

"They started the shoot in April as just friends and then one day they started kissing. One thing lead to another and they hooked up. All her old feelings came rushing back. Jennifer has been telling people she's in love again," a source said.

The reconciliation will not come as a surprise to fans, as in an interview shortly before their break-up, Jennifer, 22, gushed about her feelings for Nicholas, 23: "He is honestly my best friend, and hopefully I'm his best friend, too ... I love being around him and he makes me laugh harder than anybody."