If you have changed and he has not maybe you should sit him down and have a heart to heart. If you want to give him another chance then you should tell him all the things that need to change. Things that you have changed and he has not. Do not take the child away from him.As a parnet that is the worst thing that we do to our childern.If you do not trust him then let him have supervised visits and hopefully it will wake him to the fact that your child needs both of you.I hope that you will be able to work together to raise a happy and healthy child, because in the end thats all that really matters.