The sperm baby/l.s mpreg

Louis Tomlinson was dared by his friends to donate his sperm but Harry styles a boy has wanted nothing more than a child goes to the sperm bank and chooses Louis's sperm and gets pregnant with twins but never knew who the father was but now 7 years later Harry and Louis meet. How will things turn out and what happens when Lou finds out Harry has kids and what will louis and Harry do when they find out Louis is their father