United Kingdom, July 25 -- The Jonas Brothers "felt the pressure" to live up to their Christian values after talking publicly about their "purity rings".

After shooting to fame in the 2000s, the pop stars famously wore bands symbolising their desire to abstain from sex before marriage and Joe Jonas, 35, has admitted being open about their beliefs forced them to maintain the very high standards they set for themselves.

During an appearance on Penn Badgley's Podcrushed podcast, Joe explained: "Famously we were known for like purity rings, which were something in the community of a church where that was like what everybody else in our age were doing around 10, 11 years old, like, we're going to wait for the right person ...

"One person on...