Something is weighing heavy on Michonne’s mind, something that’s she has only ever told one other person: Carl. Michonne told him so she could gain his trust, after the event that she turned cold. Michonne knows she can trust Rick with her life. Perhaps getting this out would help her out a lot. “Rick, I need to talk to you.” How is Michonne going to talk to Rick about Andre, how she lost a child. “There is something you should know.”
