Filmmakers Amy Geller and Allie Humenuk talk about kinship, gender roles, and parenting in their award-winning documentary. “The Guys Next Door” features Erik and Sandro, whose friend Rachel offers to be a surrogate for their two children. I sit down in a coffee shop with Amy and Allie to discuss how their film both represents and impacts nontraditional families, and how family structures may change, but family life is often surprisingly unsurprising.