Thanks everyone for all the help -- as usual, you were right on the money. Last Wednesday I felt that something wasn't right even though the reconciliation was going well. I was right.
I found a secret cell phone in her purse and read the text messages. She was back with him and planning a life with me. I immediately confronted her and a very ugly situation took place.
She is now out of our home and cannot come back (legally). While I believe in DB fully, my wife has lost her mind and it's not coming back soon enough for our family.
What I've learned: trust your gut, take care of your kids and that love will not take care of everything.
I wish everyone well as I take my new, sad journey. Good luck.