Corrected entry: On 12/3/10, Rosanna said of Craig, "I wouldn't be with him if I didn't think he hadn't changed." But she was trying to explain that Craig has changed for the better, so her statement includes an incorrect triple negative by which she seems to say that she believes he has not changed.
Correction: It's grammatical error, yes, but one people make all the time. The character in question is not a linguist, so it's completely acceptable that she'd say this.
Phixius