Matthew 5:32 NASB
but I say to you that everyone who divorces his wife, except for the reason of unchastity, makes her commit adultery; and whoever marries a divorced woman commits adultery.
Seems if ones spouse committed adultery, one is free to remarry. Also if a non believer leaves, the believer is free to remarry. (not bound)
1 Corinthians 7:15 But if the unbeliever leaves, let it be so. The brother or the sister is not bound in such circumstances; God has called us to live in peace.
Then we have this:
1 Timothy 5:8 Anyone who does not provide for their relatives, and especially for their own household, has denied the faith and is worse than an unbeliever.
Exceptions are given, and those who deny that, cant read.