Joe and Nick Jonas are "competitive" over girls.
The 26-year-old singer - who has been single since splitting from Gigi Hadid last November - admitted he and his younger sibling are rivals when it comes to love and money.
Joe said: "If it's gambling or girls, it's usually competitive."
However, the DNCE singer insisted he and his 23-year-old sibling are not as competitive when it comes to their careers.
He added in an interview with Ryan Seacrest: "Luckily, I think the music genres are different enough we're supportive. We've had time to separate it, so it's not like it's a thing when it comes to music."
And the pair - who found fame alongside sibling Kevin in The Jonas Brothers - have had a lot to celebrate in their careers lately, thanks to their individual chart success.
The 'Cake by the Ocean' hitmaker said: "I saw a really cool fact recently as well that Nick and I kind of celebrated recently. I guess.
"And don't quote me on this, I read it online somewhere. We are the only two brothers since the Jacksons to have songs in the top 50s together at the same time, which is kind of a good feeling."