Does the song big girls dont cry by fergie have to do with leaving the black eyed peas?

This song evokes the feelings of breaking up with someone and remembering what they were like. Fergie sings about shelter and clarity - she needs some time to figure out what it is she wants and needs. Although she is mature and grown up, she still feels like a child, especially when she is alone and scared. She will miss the person that left, but her tears are not just for her, but also for him.