Liam's brief reunion with Steffy resulted in a pregnancy, but neither one found out about it before he went back to Hope. By the time Steffy announced her pregnancy at yet another Liam and Hope wedding attempt, Hope was done with him.
That left Liam free to marry Steffy and be there for their baby, but she then lost the baby in a motorcycle accident and was told she could not have more children. Devastated, Steffy left for Europe to emotionally recover, and, when Liam went after her, she told him to be with Hope because she could give him a family.
By then, Hope was dating Liam's long-lost half-brother, Wyatt Spencer (Darin Brooks), and decided she would date both men at the same time to make up her mind about whom she wanted. When Wyatt's mother, Quinn Fuller (Rena Sofer), prevented Liam from meeting Hope at a designated spot to declare his love, Hope married Wyatt and got pregnant.
When she miscarried, she divorced Wyatt and did the same thing Steffy did: She left for Europe to emotionally recover just as Steffy returned.