If a girl and a boy are in a relationship for the last three to five years and then decide to get married, is such a marriage considered valid in Islam?

Marriage
If a girl and a boy are in a relationship for the last three to five years and then decide to get married, is such a marriage considered valid in Islam?
Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 4 years ago

Yes, such marriage is valid despite the sinful act committed before it ( if any).

Marriage is invalid and not allowed for life if the woman was married when she committed she committed adultery with that man.

Wassalam.