Father Material by Alexis Hall (paperback)

First comes love, then comes marriage, then comes...what was that, exactly? Luc and Oliver have been through it all: fake dating to save Luc's career, I-guess-this-is-actually-for-real dating when all of that blew up spectacularly, (briefly) breaking up over irreconcilable differences, (definitively) getting back together over perfectly reconcilable everything else, (almost) getting married, (finally) moving in together, and ultimately celebrating years of perfect domestic bliss. But as all their very grown-up-now friends begin reaching new life milestones, advancing careers and having babies, Luc and Oliver decide it's time to open their hearts and lives to something new: a tiny, squirming, adorable bundle of furry joy named Spud. And maybe now that hearts-and-lives are already open, there's room for someone else. Something more. Something that may require them to find in themselves a little father material.