Joe Jonas, Taylor Swift

After Taylor Swift went public on Ellen with details of her 27-second breakup call from Joe Jonas, her ex turned his MySpace blog to explain to his fans it was simply a "change of heart."  

Though Jonas never refers to his ex by name in his recent MySpace post, the teen heartthrob makes it very clear that he is referring to Swift, whom he broke up with last month. "Anytime you are in a relationship for any length of time there are going to be issues," he writes. "Sometimes they resolve. Other times they lead to a change of heart. This was the case recently."

The 19-year-old teen idol, who is now dating 10,000 BC actress Camilla Belle, further explained he "never cheated on a girlfriend," and even though believing he was unfaithful "might make someone feel better ... it is simply not true."

Jonas also addressed the 18-year-old country singer's comments to Ellen DeGeneres that he dumped her in 27-second phone call. "I called to discuss feelings with the other person," writes Jonas. "Those feelings were obviously not well received. I did not end the conversation. Someone else did."