Maybe being on the Island. and seeing Aaron will help Sawyer realize that he does care for Clementine.
And maybe somehow, one day, it will come up in a conversation with Kate.....
S: I have a daughter....
K: Seriously? (okay, sorry about the Greys reference, but I say it all the time now,
)
S: I met her mother on a con, actually I conned her too. She got me arrested and came to visit and told me that I had a daughter.
K: Her name wasnt Cassidy was it?
Actually, did Cassidy ever tell Kate her name, Im drawing a blank,