Looking for Lost Love

Sam, a widower, gets a call from Mary, an old girlfriend who wants to take him out to lunch.  He meets her and her younger sister, Jenny, at a local cafe.    Mary talks Sam into having a one night stand. Then Jenny falls for Sam and lives with him until she gets a job offer to go overseas. Sam decides he wants to see if he can find a couple of his old girlfriends, Linda whose husband died a couple of years before and Francine, unmarried but now a millionaire.
He decides to take a trip to see his lost loves.  Mary and Jenny go along since they think he is too old to drive that far by himself. When Sam gets to Linda's house in Oklahoma, he realizes that they don't have any old feelings toward each other so doesn't stay long.  Then he goes down to see Francine in Houston. Francine is thrilled when he shows up since she always regretted not marrying him.  So she  throws out the red carpet and gets them to stay for a while.  She tells Sam that she plans to marry him, and Sam decides to go along with it since he always wanted to be a millionaire.
They get married, but they have some rocky times until Francine realizes that she can't control Sam since he really doesn't need her money.  She learns to enjoy life and have a good time with her new husband. This is a romance novel but has some humorous scenes built in.  There are also some sex scenes that are part of the storyline.