According to Heat Magazine, via The Indo, by way of Harpers Bazaar, Liam and Jennifer are now dating - which is kind of handy considering they're currently trying to promote The Hunger Games: Mockingjay Part 1.

A source speaking to one of the above outlets (we think it's Heat, but we're a bit confused at this point) said: "They intend on keeping things very low-key so they can both see where fate takes them... They've always had insane chemistry, but they've never been single at the same time before. In fact, when they first met on the set of The Hunger Games, Liam's then-fiancé Miley Cyrus flew out, possibly to keep an eye on them, I think, because she was jealous... Jen and Liam have been friends for years and she's always confided in him about the drama in her love life. She's really leaned on him during all the drama with Chris... Jen started pouring her heart out about Chris and things got personal. Liam knows Jen loves koala bears so, the next day, he had an enormous stuffed toy koala sent to Jen with a note saying, 'Hold out for the perfect man."

So, to recap, according to various sources, Jennifer is still dating Chris Martin, is reuniting with ex Nicholas Hoult, and is now starting a relationship with Liam Hemsworth, while also hanging out with Lorde. Where DOES she get the energy?!