I am a single mom and have been in touch with the mothers of my dds 2 half sibs. One is a girl and one is a boy. It's very interesting to see the resemblances between my dd and her half sibs. In the case of the boy, he and my dd look soooo much alike. Not everyone is interested in contacting half sibs, but I felt it would be beneficial for my dd in the long run to be able to contact these sibs if she chose to. So, I'm keeping in touch and exchanging emails and pics with the moms of her half sibs.