Sorry if this isn't the right place to post this. I signed up for this forum hoping to get some unbiased, biblical Christian advice on a really odd situation that I'm faced with.
When I was 22 I got married to a wonderful Christian woman. We were married for 5 years, and she and her friends took a trip to a country in central Asia (this was in 2011). A few days into her trip I stopped hearing from her, and no one had heard from her friends either. Long story short, they just kind of disappeared, the foreign country's government couldn't find her, and she was legally declared dead (I was shown her US-issued death certificate).
5 years later (2015) I got married to another great Christian woman. We've been married almost 3 years now and are getting along well.
So now the difficult situation; my first wife has come back. Apparently she and her friends were being held by the government of that central Asian country, suspected of being spies. They recently released her, she made it back home, and I was amazed and so happy to see her again.
Right now we (me, my wife, and...my wife?) are talking about having a three-person marriage. We just sort of mentioned it, at this point we haven't really settled on anything.
So my question is this; would it be biblically acceptable for me to be married to both of them? And if not, which one takes precedence? I truly do love them both, but I need to be right with God first and foremost.
I'm feeling very conflicted, as I made a lifelong vow to both of them. Advice/insight would be very much appreciated.
Tl;Dr My first wife disappeared and was declared dead, years later I remarried, now my first wife has come back.