It's official -- Jennifer Lawrence and Nicholas Hoult are back together.
The two split in January -- right before Jen won her Oscar -- but fell back in love while reprising their roles in the new X-Men movie.
A source tells Us Weekly, "They started the shoot in April as friends, and then one day they just started kissing. One thing led to another and they hooked up. All her old feelings came rushing back. Now they're fully back on."
The couple had reportedly called it quits because the long-distance thing wasn't working, but now they have been inseparable on location in Montreal.