Bristol Palin on Levi Johnston Breakup: 'I Was Naive'Bristol Palin, less than a day after her sudden breakup from recently on-again fiance Levi Johnston, has offered new words on the dissolution: "Perhaps I was naive, but I really thought Levi was ready," Palin wrote to

"I see that Levi's people equate me with a bridezilla. This is not about me," she added. "This was about doing what was best for Tripp and making us a family."

Levi is "doing well and is upbeat" since the split went public, a source tells Radar. "They are both giving it space."

Sarah Palin's daughter, 19, told PEOPLE yesterday, "It's over. I broke up with him."