Joe Jonas says his ex-girlfriend Demi Lovato is like "family".

Demi Lovato

Demi Lovato

The 'Cake By The Ocean' hitmaker insists he is still "really close" with his former flame despite their break up in 2010.

He said: "She's family. We've known Demi for so many years. We're performed with her, toured with her. She's just incredible.

"But it's not always the case [that relationships end on good terms]. Sometimes you have to know when to fold the cards. I don't think of her as an ex. We're really good friends. We've gone through so much together and we're really close now."

Meanwhile, the 26-year-old singer previously gushed about Demi, 23, revealing she is the "best version of herself" he's ever known her to be.

He said: "She's the best version of herself I've ever known. She's healthy and that's obviously something a lot of the world knows now, but she's gotten over [the really hard part].

"I know a lot of friends who've gone through similar things and it's when you have to live with your new self for a few years - that comes with a lot of struggle. And being a pop star on top of that, that's a lot of pressure, but she's amazing at speaking truth to what she believes."

And Joe also revealed he is envious that Demi is so accepting of herself.

He shared: "I wish I could have a bit more of that. Excuse my language, but she doesn't give a f**k. She goes out there and says, 'This is who I am.' Considering what we've all come from, it's not always easy. We feel like we have to be cautious."