Ian wasn't with his sister, but she was indeed pregnant and gave birth to a baby.
He could guarantee that the child had by no means been replaced, so over the years, although he knew that Ted nearly destroyed the Flores family and killed his sister, Ian chose to endure the humiliation and help Simon to the best of his ability. He did everything for Simon!
But in the end, reality told him that his sister was just a surrogate mother to Ted's baby, who had nothing to do with the Flores family! Everything he had done was just a joke, and he had totally been tricked by Ted!
Ian's heart was filled with hatred. All his hatred was directed at Simon. Just as he cared about Simon very much before, he hated Simon very much now! That was why, after Ian caught Simon, Ian tortured Simon in every way!
"It's not up to me what kind of face I can own," Simon said with a chuckle as if the torture had caused him no pain.
"Shut up!" Ian slapped him in the face.
