Louis had happily been dating Harry for 5 years, well that's what he thinks, Harry has been dating Louis for 5 years but cheating on him for most of that time. Louis is oblivious and totally in love with his boyfriend hoping to soon get married. When will Harry tell Louis about his cheating ways? Or will it be to late? Will Harry ever stop? What happens when a baby becomes involved? How will Louis take the news that his true love has been cheating on him for years? It will contain smut AU