I started to believe this when I booked 3 musicians for a concert in Chicago. 2 of them are lesbians, each with a wife and 2 kids. After I introduced them, when waiting in the Green Room, while I was with them, one of the women showed the rest of us photos of her kids on her phone. The other lesbian said, "Your kids look just like my kids." To make a long story short, they talked about where they got their sperm (a company in California,) and his donor number. Their kids have the same bio dad. There are 5 kids from his sperm. 4 of them are in these two families.