To answer your question, PA allows a unilateral divorce after two years. By refusing to sign a consent form, you can make your husband wait two years. It does not matter if you still live in the same physical space. You will be considered separate and apart for divorce purposes if you have ceased living like a married couple. You may also demand marriage counseling. For this, you must file a petition. Your county prothonotary should help you file that petition.
I agree with attorney Sipe's answer. I would simply add that you should go to your domestic relations office and file a claim for alimony pendente lite (APL). This will require your husband to pay you for the remaining two years (if he makes more than you) and may change his tune.
The APL money should allow you to hire an attorney to protect your economic interests before the conclusion of this divorce.
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