What is the ruling on a young man meeting his paternal cousin, with whom he has an agreement to marry, and what should he do about his father's refusal to approve the engagement due to an old dispute with his uncle, given that the girl and her family approve?

The dispute between the father and the paternal uncle must be ended because it is a forbidden severance of kinship ties. The questioner must strive to reconcile them. There is no sin in loving the paternal uncle's daughter as long as it does not lead to something forbidden, such as private seclusion (khalwa) or touching. Encounters and conversations with her must be cut off, then an attempt should be made to convince the father to agree to marry her, if she is religious and of good character.