Memoirs of an Amnesiac

So you met this really interesting woman. She's smart, funny, and yeah, interesting. You are not really attracted to her, but she sure does share the same tastes with you (food, movies, books, etc.). You then start to share text messages. You started to desire her. But, here's the catch! You are in a committed relationship and plans to get married real soon. Your ego fights between keeping her and telling her about the whole truth about your relationship with her and lose her or let her believe ...