1. Keep yourself refrained from any such actions which can land both of you in trouble.
2. Since you are planning to file for mutual consent divorce , wait till you get divorce.
3. two adults can be living together, but there many provision under different law and acts which you can be arrested and detained.
4. Your love for her can be justified but nothing can be done as you cannot get her out and marry as , if you get her out of the house with you , you will have to marry her to escape from legal actions and criminal charges. But you cannot marry her ,your marriage with her will not be legally enforceable one as you are not yet divorced your first wife.
5. If you both ran away and caught future course of legal actions cannot be predicted in your favour so , get a divorce from your present marriage and do whatever is possible to be with your girl friend legally.