The last two years have been busy for Alanis Morissette. “I feel like I’ve gone from repression to explosion to contemplation,” she says in the latest Spin magazine. “I always believed in black and white; something was either great or horrible, including myself. And now it’s just gray.” Morissette’s new album “Supposed Former Infatuation Junkie” — the much-anticipated follow-up to her 1995 debut CD — is selling very well. On the new album’s second single, “Unsent,” she addresses some of her ex-boyfriends with details from the relationships. But she changed the names and called all the guys in the song to tell them what she was doing. “It was hard, but it was beautiful,” she said. “I took responsibility. It wasn’t just me pointing.”