I admit that I have been frequenting this site for more years than I care to admit and the story in question is most likely in the "Premier Only" section.
The story is about a successful day trader that meets a younger woman in the convenience store his sister owns. They have a lot in common and begin dating and fall in love.
The sequel has the couple separated and the man was found in a fugue state (following 9/11 attacks I think). They reconnect.
Thanks to anyone that can help.