someone who is a good friend? it is a new twist on the modern family as more and more friends raise kids together. you have to see this. this is a report from poppy harlow. >> why don't we just do it? >> reporter: friends with kids. it is not just the stuff of hollywood movies. >> you want to have a kid. share all the responsibility and just skip over the whole marriage thing. >> look what i have? your new cup. >> reporter: call it the modern modern family. you say you broke all the rules. >> we did. >> bye-bye. >> reporter: dave and evelyn were co-workers before co-parents. you were her superior. >> i was. but we weren't -- we weren't messing around. so we weren't breaking every rule. >> reporter: heidi and david, friends for 20 years, joked in college if neither had a child by 36, they would have one together. >> i wanted a partner in