Most of the people in this forum face such problems... i agree, courts take 5-6 years of your precious years which never come back...
LAW is such that you can do nothing till you are divorced. AND same goes for your female friend. Even if your wife gives you a written NOC for getting married , you still cannot get married with anyone.... till you are divorced,
If there is no way that you both can get divorced....then be strong and live your life the way you want it to be. but be ready of consequences...
1. you will have to be very careful that either of the spouses (your wife and your friends husband) do not find out that you both are married or living in a live in. OR having babies.... Because, then you are in deep sh*t. DO THIS.....only when you trust your partner and her family fully.
2. Be sure, your female friend, when living with you is always happy. Because, if she ever takes you to police or court.....you will be charged of allegations.....you wont be able to count...
3. Even if the husband of your female partner finds out that your living with his wife.... you will again be in trouble. Ironically, the female does not faces charges of adultery but you do...and can end up in jail. SO, beware of that too.
Best is......by all your influence and power....get divorced and then lead a happy life. Even if you spend 1-2 years negotiating for MCD, try for that....so that... you atleast can be sure of a safe future. and you never know.... when miracles happen. ALSO YOUR WIFE MAY TAKE A U TURN AND ASK FOR A DIVORCE IN COURTS.....when she see's you adamant to be away from her.... Loads depend on the way your case is put and the grounds on which you ask for a divorce.
OR just vanish away.....and live a simple plain life anywhere and not be caught....for years... (though its not easy as is said) but with your circumstances....this can be an option.
REMEMBER - ATLEAST START A FIGHT AND FACE ALL THAT WHAT COMES.....YOU WILL SEE, AFTER FEW MONTHS...ALL BECOMES EASY FOR YOU..... AND THEN YOU ARE IN A BETTER POSITION TO NEGOTIATE.
my advice.... you may live in with your female partner....but should start your divorce in courts too. Even after few years, whenever you get divorced....you will not repent that you have wasted some years........BUT KEEP THAT LIVE IN......SECRET. NOT EVEN TO YOUR CLOSEST OF THE FRIENDS..... EVEN IF YOU MARRY.....DO NOT KEEP ANY PHOTOS OF THAT CEREMONY...... just say , you are in a live-in (if caught)..
best of luck...