Having been a Lone Parent for many years this is all a little strange but here goes....
My OH has moved in with me and my 2 girls, and his 3 (my God daughters) are visiting us for the school holidays and for special occasions (he is having some issues with his ex over what is reasonable time for him to see them).
Apart from the poor man having 6 girls/women to contend with it's all going well. All the children get on (mostly) and we have enough bicycles to go round.
We're hoping to see more of his girls over the next months/years, but at the moment everything is new and we're just taking it slowly.