Justin as sperm donor and has a child

[sfscarlet]

I read a fic not long ago where Justin was sperm donor and a child is born.  He doesn't know about it until the mother dies and a social worker finds him and tells him about hte child. The child is 4 years old- I don't remember the author or the story title.  I need to find the story,

found- Cathy sent me the story and it is the right one- thanks