She promptly stole her husband (viaSoap Central).
Instead, she found Jason’s brother A.J.
Quartermaine (Sean Kanan) and had a one-night stand.

Soon after, Carly learned that she was pregnant.
and believed he would be an unfit parent due to his alcoholism.
Terrified to let him have a claim on their child, Carly was thrilled when she realized A.J.

had blacked out during their tryst and didn’t remember them sleeping together.
She saw this as the perfect opportunity to give her baby a different father.
Quartermaine had remembered their night together.

Carly and Jason Morgan agreed to have Jason pretend he was the father to prevent A.J.
from gaining custody, according toSoap Central.
Robin eventually moved out and made the decision to tell A.J.

the truth about Michael.
Carly and Jason’s romance didn’t work out
When A.J.
Quartermaine learned that he was Michael’s father, he and Carly Benson decided to get married.

Feeling heartbroken and betrayed, Carly went to Jason’s best friend Sonny Corinthos to get revenge.
Carly and Sonny ended up sleeping together, and Jason found them together the next morning.
Quartermaine so she and Michael could move in with the notorious mobster.
Jason Morgan, who had returned to town by this time, gave the couple his blessing.
Sonny was furious over her betrayal and immediately filed for divorce.
Ever the pragmatic crime boss, Sonny kidnapped A.J.
and threatened to kill him until he agreed to sign over his parental rights.
Michael (now played by Chad Duell) managed to reconnect with A.J.
When Sonny came back to Port Charles he defended Nina despite how angry everyone was with the situation.