In relationships, there needs a "had child together" there are times when the parents were not married, yet they did have a child together. Perhaps it was a one time thing or something else, think slavery in the south, . There is no evidence that they lived together or perhaps we know they did not live together. We need to have a relationship tag for having a child together. It seems like whitewashing history to put "lived together" when all we know is that they had a child together and then, many times, each went on to marry different people.
Thank you for your time