Marriage With A Polytheist Is A Sin, But Still Valid?
It was a single violation like other sins. The person who committed this act didn’t care about ‘what Allah wants’, then who are we to say anthing? We can only tell about the social status of that marriage as an outsider. What Allah wants is from that person, not from you and me to impose on him. If that person ever decides to make amends, then he will definitely seek forgiveness from Allah. However, cutting ties of marriage after realization is not obligatory on him, it is for the individual to decide; because such social decisons have a long lasting impact, that is why no such obligation was made by religion. In order for you to prove that it is a continuous sin, you need to bring an explicit verse of Quran and not the other way round.