When parents have a number of children, each is different. When one reveals he or she is gay, loving parents accept and encourage that person to be the best he or she can be. When that person matures and becomes a responsible adult, we encourage and applaud that growth.
It follows, then, that when an adult meets someone special and worthy, loving parents should accept and enjoy their relationship. That is the basis of a good marriage and a loving family, and we can certainly use more of those. When two people love each other and commit to a life together, they should be allowed that privilege without interference.