I think the question/conversation being had concerns the father's blessing to ask the young lady to marry the young man. I don't think it is a horse trade or something like you make it seem here. I have three daughters and if young man ever comes to me to seek guidance or blessing before official asking one of them to marry him I would be thrilled with that. It shows good character and leadership to seek counsel before any big life decision. If they don't ask, I am not going to boycott the wedding though. I have tried to raise my girls with an example of what to look for in a husband. I have failed in many areas of my life, but I pray that they see how I treat my wife/their mother, how I go about caring for my family, and how I try to lead my family spiritually and seek out a husband that has those and even better qualities.