What Do I Do With an Unfaithful, Unsubmissive & Unrepentant Spouse? Q&A Session

Question:
What can a Christian do, if after getting properly married to a woman and the said woman does not find reasons to honor her marriage, 
but instead she is unfaithful, disrespectful and unsubmissive even after you forgave her several times and still you are willing to make the marriage work if only she changes her way, but she no longer want to make the  marriage work due to lack of love for her husband. 
Even after the church and well wishers have advised her to keep her home, in other words the husband has done everything within his power and prayed along too, 
yet she insist on scattering the home.
Based on the above explanation is it wise or biblical for the husband to let her go and possibly start a new home as soon as possible through Gods guidance for the sake of his own growth and peace of mind?
Bearing in mind that God does not support divorce or broken homes
What is the right and biblical decision to take in a situation like this?

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