Struggling with romantic feelings for a woman

I am forty, have been married to a man for sixteen years but I have always thought of myself as bisexual, although I never considered having a romantic relationship with a my mind, my attraction to women was purely sexual. That was until I met "Jane". She has awakened feelings in me that I have never experienced with anyone, man or woman. My husband is aware of my relationship with her but he doesn't know that i think im falling in love with her... what do I do now??? I need advice!