Goodnight, Beautiful by Dorothy Koomson

Nova will do anything for her closest friend, Mal, whom she has known since childhood. So when Mal and his wife, Stephanie, ask Nova to be a surrogate mother, she agrees—despite her reservations about what it might mean for their friendship. Then Nova’s fears are realized. Halfway through the pregnancy, Stephanie finds a text from her husband to Nova that reads “Goodnight, beautiful.” Already suspicious of their deep connection, Stephanie demands that Mal cut all ties to Nova and their unborn baby, leaving Nova to raise the child alone.

Eight years later, Nova is anxiously waiting for her son, Leo, to wake up from a coma, while childless Stephanie is desperately trying to save her failing marriage. Despite her anger and hurt, Nova wants Mal to have the chance to know his son before it’s too late. Will it take a tragedy to remind them all how much they mean to one another?