I would like to know is islam gave the permission to have nikkah with a girl with whom u have sexual relationship before?
Answer
(Fatwa: 498/417/B=1432)
Yes, it is allowed rather the nikah of an adulterer with an adulteress is better.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband