The singer is said to have drawn inspiration for much of his 2014 release, Montevallo, from his relationship with ex-girlfriend Hannah Lee Fowler, and now they are rumoured to have rekindled their relationship.

Hunt has been hinting at finding love again on Instagram, after previously posting a picture of a brunette on his account, while keeping her face concealed.

He shared another shot of his lady, again facing away from the camera, on social media last week (ends26Aug16), and simply captioned it: "My day 1," suggesting she has been there for him from the start of his career, and now a source tells Entertainment Tonight the couple is back together.

Hunt has yet to comment on the report, which emerges six months after he was linked to actress Kaley Cuoco following a night out in February (16).

The Big Bang Theory star dismissed the romance speculation at the time, insisting there was nothing romantic about the post-Grammy Awards get-together.