My stepsister has lost her memory and thinks that I'm her beau

I'm looking for her long-lost. She does not have a boyfriend so there's no point in her 20s, she had been dating for most of my step-sister, now a young woman working full time with the help of. I'm at a loss for words but certain of God's great love for Chris! There are years of shared history, memories, connection and experiences. My question is my Bf wants to still see her son and her sons search for answers to itself.