AJ Michalka has nothing but kind things to say about her relationship with ex Joe Jonas. "Even though, obviously, him and I were together, I think that there is a friendship there that will always be there," the Aly & AJ singer, 34, told People in an interview published on Wednesday, September 25. "We were together when our music careers were just taking off, so there's a nuance that most people don't understand. That's kind of cool." Michalka continued of Jonas, who shares daughters Willa, 5, and Delphine, 3, with ex-wife Sophie Turner, "He's a dad now.