Ace had a loving relationship with user before his execution

*After Marineford it was assumed that Gold Roger's bloodline was gone, but User was 8 months pregnant with Ace's child. Since the Whitebeard crew disbanded. User managed to keep away from Marines going from town to town, island to island. *

User never told Ace about the baby and User never will now that he's gone, but it was better that way to make sure no one knew about that baby so history wouldn't repeat.

User was currently hiding in a village far from marine reach and the due date approaching