Did singer Joe Jonas make a sex tape with his girlfriend Blanda Eggenschwiler? His rep says no way.

According to blindgossip.com, the Jonas Brothers star, who years ago wore a purity ring as a symbol of abstinence, was filmed engaging in explicit sex acts, drinking and smoking marijuana with the Swiss-born model.

The sex tape is going to be released next month, according to the website.

However, Jonas' rep told Us Weekly: "There is no truth or validity to the story. It is completely false."

And Jonas, 23, also denied the existence of a tape, writing on Twitter:  "ball gag? really? me? come on guys."

The couple began dating last year. Model/graphic artist Eggenschwiler is based in New York.

Jonas previously dated country pop star Taylor Swift, actress Camilla Belle, and actress Ashley Greene.