Hi, Ponty,
I'm curious to learn where online you met 'the other woman.' I'm not intending to be catty in referring to her as that, for unless and until you give both her and your wife their dignity, your new lady-friend will be 'the other woman', 'the mistress', or what have you.
Sooooo....more thoughts to ponder: What is 'love'? What combination of attraction, attachment, affection, desire, enjoyment of another's company and fulfillment of unmet needs causes you to label this as true love? Again, not being obnoxious, as these are questions I seriously began asking myself a couple months ago. Another is the acknowledgment that there are MANY beautiful people in the world with whom we may share things in common....but that doesn't mean we're meant to be with all of them. And there's chemistry, too....in the heat of your new emotions and the thrill of trying not to be found out, and the possible feelings of solidarity to increase your bonding as you endure possible future adversity together .... Well, leaves a lot of dust to settle before you two will discover whether this is a passing wave or a sure thing.
if you have marriages to address then address them. let the dust settle and maybe even think of exploring the rest of the world a little bit as a free man before getting too deep with your new friend. I know it's hard to pause something you've started, but in the end I think it will work out better for everyone if you do it that way. I'm not necessarily saying that divorce is the way to go, but by your own post it seems that that's what you want. ( a topic of interest which you and others may want to explore on a totally different thread is the viewpoint on marriage by neale donald walsh, as presented in his conversations with god books)
if your friend indeed identifies as female and not trans, you need not fear the reaction of the family or the public, unless you out her, which would not be a very respectful thing to do anyway.
Just my thoughts for whatever they're worth.
Best wishes,
Valerie