Would you feel comfortable?

Nia

So here's the topic of discussion. You have you husband/fiance/boyfriend whatever, and you guys build a family together kids and all...Would you feel comfortable with your SO being a sperm donor? I understand it is something that can help others, but how would you feel personally in your specific situation if someone else that is not you, has a child that biologically belongs to him? I know that the sperm donors have no ties with the people that they donate to, but I remember watching a show (I believe it was on MTV) that the sperm donor's kids started searching for their biological dad's once they turned 18. Imagine you have your own family, and then BOOM this child appears out of nowhere wanting a relationship with your man and sibblings. Or if hypothetically (yes we know the chances are slim to none) you run into this child and he/she looks exactly like your man or one of your kids.. How would all this make you feel?