Liam Hemsworth has a new bae

Los Angeles - Liam Hemsworth is reportedly dating Maika Monroe.

The Hunger Games actor, who split from former fiancée Miley Cyrus in late 2013, was spotted being very affectionate with his Independence Day: Resurgence co-star a party in Los Angeles last weekend.

A source said: "His hand was on her butt as she was grinding into him and they were making out at the bar. Liam was draped all over her. It was so PDA and in-your-face!"

While the duo appeared to be extremely comfortable together at the 4 July bash hosted by director Roland Emmerich, another source close to the 22-year-old actress insists their romance isn't serious yet.

The insider told Us Weekly magazine: "They're not official. But their chemistry is ridiculous!"

The rumoured new couple were also seen buying drinks at a café in Malibu on Tuesday.

While Miley, 22, recently started dating Victoria's Secret model Stella Maxwell after confirming she is bi-sexual, Liam hasn't been seriously linked to anyone since their break-up.

However, the 25-year-old Australian heartthrob was photographed kissing Mexican actress Eiza Gonzalez just days after their split.