By falling for someone who your parents or society would not approve of could be an act of rebellion to keep him or her feeling desirable and young? Also so often someone involved in a turbulent relationship is convinced that they can change the person. If they are lucky perhaps they can eventually but as the old saying goes a leopard doesn't usually change it's spots. In my experience as a mother the more objection you have for the situation the more they are likely to do the opposite. So what can you do?