God Bless You and be with you through all your troubles. I am sure what is best for you and your son will all work out in the end. There has been a lot of advice given to you here, but in the end you know your ex and how he may react to certain situations, so you will have to make that final decision. What you would think is the best way to approach him with this. Just know that you are in my thoughts and prayers, and I hope your new life brings many blessings your way.