If you will love your wife as your own body, then I think you will not have any problems with her chosing her children over you. It will work itself out. It will not be a problem. That is were the husband mentioned above found his answer. He realized that he was being selfish.
Selfishness is the root of all evil.
I don't know of a verse that says that, but that is a conclusion I have reached after ma ny years or Bible study. I hope that I have answered your question. I apologize for taking so long to answer. I do feel for you and your question. I don't know your situation, but I think you may benefit from my response to a gentleman who found himself in a real pickle, and asked for my advice.