Should I go to this Celebration?

Stay with your current wife and only go if she gives the consent.In case the consent is not there do not go and for the sake of showing your concern and love to your Son send him a call/card etc.Your step son has learnt to live without you being physically there so he will not miss you.But surely you will put your current relationship to danger which has come up after the first was stopped.Convince your now wife if it is not possible then live with your current wife.You cannot have two existences