Oh Alison, (((()))) I am afraid your son is 16yrs and he isn't a nice young man at the moment. Good for you for not going back to being a pushover, given the circumstances that might have been the easy option when I know how much you miss him and want your family whole. One day when all is not so rosie with his dad he will turn to you, may take a while but it will happen. You have set your boundaries and you must stick to them. Was the call to replace the letter or had you sent it? Sons break our hearts so easily and then when they finally turn into the wonderful human beings we raised them to be, they fall in love with some totally unsuitable girl! Is your d home from uni,or is she living with b/f? What about the youngest how is she doing with it all,have they tried talking to their brother.
It will get better, for now concentrate on you and the girls. It must be so hard. I am thankful my children didn't grow up quite so fast as they do these days, however I always was a strict parent and my kids did the usual so and so's mum lets them stay out til whatever, go away with their b/f.So we all go through the battles. I am known for telling my parents when they complain 9yr old son won't do xy or z, well if you can't win the battle now you never will, so make sure you don't loose. Children need love, routine and boundaries, makes it hard as a parent at times but eventually hard work pays off. Your son is pushing all those boundaries Alison, stand firm, he knows you love him. Take care and try and have some good times with the girls,they still need you.