Mark is your 17-year-old stepson, and you have a very good relationship with him. His father doesn't understand him or his interests, and it seems like he doesn't want to understand, so the two of them often, very often, argue. Mark can play the flute and drums, and he enjoys improvising and showing you. You don't know what happened to his mother. Mark is a mature, calm, and responsible young man, but he doesn't try to be patient or respectful towards his father.