Snow Patrol frontman Gary Lightbody has urged the Jonas Brothers to start sleeping with women - for the benefit of their fans.
The trio - Kevin, 21, Joe, 19 and 16-year-old Nick - wear promise rings and have famously vowed to not have sex before marriage.
But Run singer Lightbody has blasted the brothers, insisting they are giving out the wrong message to fans - as teenagers will always want to break taboos.
He tells Scottish newspaper the Daily Record, "When a band takes a stand so vehemently and so opposite of my own views I have to speak up, simply as a concerned citizen. This is not about their music, that I won't comment on. Two words - promise rings? From all our teenage years onwards, we think of sex a lot. You think abstinence is going to cut the mustard? I may know very little, but one thing I'm sure of is that this simply will not work.
"The things we make taboo are the things kids naturally gravitate towards. Swearing, sex, drugs, tattoos, guns, violent games and movies, dark rock music, all these things are in the 'Do Not Touch' pile and that is way too tantalising for kids, who are only trying to find out for themselves about life's adult mysteries.
"When they are only taught abstinence they are really taught nothing at all. We all have a primal, almost ceaseless urge to mate and a bit of silver on one finger isn't going to stop millions of years of animal evolution."