MARRIAGE AFTER HARAM RELATION WITH NO ZINA(SEXUAL INTERCOURSE)

All Praise be to Allah, the lord of the Heavens and Earth.

Firstly: 

Any form of relationship between man and a woman, which is called and the unlawful and illicit relation is Haraam. It doesn't matter if it goes as far as being intimate(Zina) which is indeed most hated, reprehensible and abhorrent type of a sin. It poses a great danger to individuals religious commitment and faith, or it is less than that, such as looking, touching or kissing. All of that is haraam and these are types of Zina in the general sense and are things that lead to the greater immoral action. 

Secondly: 

If the marriage takes place after a haraam relationship between a man and woman, then one of the following scenarios must apply: 

1. Either that marriage comes after an illegitimate sexual relationship, in which case the marriage is not valid except on the condition that both the man and woman repent from Zina and it be established that the woman is not pregnant as a result of the haraam relationship, because Allah, may He be exalted, says (interpretation of the meaning): 

“The adulterer/fornicator marries not but an adulteress/fornicatress or a Mushrikah; and the adulteress/fornicatress, none marries her except an adulterer/fornication or a Mushrik [and that means that the man who agrees to marry (have a sexual relation with) a Mushrikah (female polytheist, pagan or idolatress) or a prostitute, then surely, he is either an adulterer/fornicator, or a Mushrik (polytheist, pagan or idolater). And the woman who agrees to marry (have a sexual relation with) a Mushrik (polytheist, pagan or idolater) or an adulterer/fornicator, then she is either a prostitute or a Mushrikah (female polytheist, pagan, or idolatress)]. Such a thing is forbidden to the believers (of Islâmic Monotheism)” [al-Noor 24:3]. 

2. That marriage comes from a haraam relationship, but the relationship did not go as far as Zina, such as kissing, touching and other haraam actions that are less serious than Zina. In this case, the marriage is valid because it cannot be said of those who fell into this haraam relationship that they committed Zina. 

And Allah knows best.