I suspect that it will be the case that your boyfriend’s marriage has irretrievably broken down. If he is able to establish this on the basis of her behaviour or adultery then he will be entitled to a divorce which is not conditional upon his wife's agreement. He must however be in a position to prove service of the petition upon her.
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• Get a divorce
• Have contact with my children
• Make a small claim
•Write a letter of claim
•Obtain a Grant of Probate
•Get legal advice and help with my case
•Make a Will
•Change my Name
•Prepare a legally binding agreement
• Sever a Joint tenancy
• Prepare a Partnership Agreement
• Sell a Jointly owned Property
• Appoint a Guardian for my children