He walks straight past her. Then realises the beautiful, relaxed woman in the sunglasses is his (in my opinion absolutely fucking amazing) wife.
Then...
He is totally inspired by her. They fall in love all over again. He sells his business, they stay in Greece and spend their retirement skinny dipping and drinking sangria. He always loved her. He just stopped being a "boring bastard" and was forever apologetic for the dippy egg thing.
Go Shirley. You rock - no pun intended