What happens if the husband converts to the Islamic faith?

Another interesting area is what happens if the husband, who is having affairs upon the wife’s objection, threatens to convert to Islam as the religion allows a man to have four wives at any one time (although subject to conditions laid down by the Koran) Can the husband do it and be free from all obligations as a husband? The answer is no. The husband’s Islamic marriage will not affect his existing marriage. The woman’s marriage with her husband is still good and intact. The woman’s husband still has to uphold his duty as husband to her and father to the children under the existing non-Muslim marriage.