Best-selling transgender author Jennifer Finney Boylan and her wife have maintained a loving relationship with their two sons. “What we know is that the gender of parents is a whole lot less important than the love in the family,’’ said Boylan, who underwent gender reassignment surgery in 2002, on TODAY Friday. In her new book, “Stuck in the Middle With You: A Memoir of Parenting in Three Genders,” Boylan writes about raising a family while transitioning. Jennifer, her wife Deedie and son Zach spoke with Willie Geist on TODAY Friday and also conducted an interview with Harry Smith that will air on “Rock Center with Brian Williams” at 10 p.m. ET on Friday.