parenting. so i circled back to david and i said, i'm ready. all sims are go on my side. and i would like to do this with you. >> reporter: they're parenting partners, not romantically involved, not married, but sharing the huge task of parenting. do you ever feel judged? >> absolutely. >> we heard a lot of comments, positive and negative, with respect to what we have done here. >> reporter: heidi and david do it living apart. do you ever worry this may confuse nate when he's trying to figure out for himself what a loving relationship is? >> that a boy. >> david and i have a loving relationship. we don't have a romantic relationship but we have a loving relationship. >> just because he wasn't conceived as a result of a romantic interlude doesn't mean we'll be less as parents. it doesn't mean we love him any less. >> reporter: evelyn and dave do it living together. >> i do think it is a little easier for a single woman to become a mother and not be looked down on. >> and i found it different.