Charlotte, No amount of disruption in his life will justify his writing something like that, I can only imagine how difficult it must have been for you to read it

Have you spoke to your partner about the letter and how uncomfortable it is making you feel?
Of course your twins are not better off dead, I have no doubt you are a wonderful mummy but this boy clearly has problems. I don't think it is your place to sort them out. I completely understand you not wanting him in your house, but I think you need to tell your partner all this if you haven't already.
Obviously I don't know him but I can't imagine him hurting your daughter, It is most likely jealousy and frustration causing him to act out this way, I know that won't make it easier on you. Perhaps you could suggest counselling for him or maybe family counselling to try and get the bottom of why he does the things he does. He might have written those letters for you to 'find' as another way to hurt you without really meaning what he wrote

I will hope you can find some way of sorting this out
