The Birthday Boyfriend by Nell Alexander

Caterina is happy living the single life in her forties. So what if her husband had a cliche midlife crisis and ran off with his overpaid and underworked secretary? Who cares that he spent all their savings on a sports car and left her holding the debt of divorce and debauchery that she didn’t even get to join in with? Caterina is just fine, thank-you-very-much, because she will never lay her eyes on another man for as long as she lives.
When she is invited to her sisters lavish weekend-long birthday party and unable to face the pitying stares of her family, she hires Bash to be her boyfriend for the weekend. All he has to do is show up and pretend that they’re a couple for seventy-two hours. And with no nudity or adult-themed activities, Caterina doesn’t even need to wax…