The side effects of a gene-altering, experimental treatment means that Damian could go primal. Regress. And be overcome with the urge to claim the right woman.
It sounds too crazy to believe. Divorced and bitter, all that Damian cares about is his infant son. Maybe he also cares a little too much about his young nanny, Maya. Even if he knows he should let her go soon, so she can start her own life.
Or, that had been the plan. Now that he's caught in the throes of a primal regression, he knows he can't ever let her go. She was meant to be his. And he's going to bind her to him forever, by claiming her until she's good and bred.