Steffy Forrester (Jacqueline MacInnes Wood) had already miscarried Liam Spencer’s (Scott Clifton) child before they were married. When she learned she was pregnant in 2017 after finally becoming Liam’s wife, it should have been a joyous occasion.
But, of course, she had to have a paternity test done behind Liam’s back because — whoops — she had a one-night stand with Liam’s dad, Bill Spencer (Don Diamont), after learning Liam had kissed Sally Spectra (Courtney Hope) when they were trapped under the rubble of Bill’s skyscraper and thought they were going to die.
Liam turned out to be her baby’s father, but he was so incensed when he learned there was any question as to whom the baby belonged to that he left Steffy crying hysterically on the ground, begging for him to return. Steffy pulled herself together and essentially went through her pregnancy on her own and gave birth to a little girl named Kelly.
Liam was ready to reunite with her when he met his daughter, but, while he was apart from Steffy, he slept with Hope Logan (Annika Noelle), and she was now pregnant, with no question as to who fathered her child. Liam opted to divorce Steffy and marry Hope as they awaited the birth of their new baby.