My husband is a disfellowshipped Jehovah's Witness and he has filed for a divorce.
What is the Jehovah's Witness belief about divorce and the responsibility of the husband to a non JW wife?
As Jehovah's witnesses we ONLY adhere to what the bible teaches.
The Bible teaches that the Creator instituted marriage and made no provision for divorce. A man was to stick to his wife, and “they must become one flesh.” (Genesis 2:24)
In the Christian congregation, therefore, aside from death, which automatically breaks the marriage tie, the only other way it may be broken is on the ground of “fornication,” which causes the offending one to become one flesh with an illicit partner. It therefore may be used by the innocent party as a ground for dissolving the marriage if that one chooses to do so, and the innocent one may then remarry. (Matthew 5:32; Romans 7:2, 3) Aside from making this allowance in case of “fornication” (Greek., por·nei′a), the Greek Scriptures counsel Christians not even to separate from their mates, whether believers or unbelievers, and require that if they do, they have no sex relations with anyone else.
Jehovah hates an unjust divorce, especially where a faithful worshiper of his was treacherously dealt with in order to arrange for another marriage to a pagan woman who was not a member of his chosen covenant people.—Malachi 2:14-16
We do not adhere any doctrine outside of the principles of the Hebrew and Christian Greek scriptures. We believe that the creator (Jehovah), does not force anyone to uphold these principles in their lives, but is a choice out of our own free will. Therefore if a person is no longer one of Jehovah's Witnesses (disfellowshipped) they are at their own will.
If you are interested in learning about the beliefs of Jehovah's Witnesses then I would reccommend to always go to jw.org for accurate answers, and beaware of any other misleading and fruadulent websites that non-jw's may refer you to.