Jack remained reluctant to commit despite the affair, prompting Diane to give up.
Diane inevitably left Andy to be with Jack, hoping he might finally be ready to commit.
Faced with this painful truth, Diane attempted to reconcile with Andy, but he had moved on.

She left Genoa City, choosing to start afresh.
She attempted artificial insemination using Victor’s frozen sperm, but Nikki sabotaged the plan by swapping the vials.
Diane eventually returned and discovered that Jack was the father of her baby.

However, by then, Jack had moved on with Phyllis Summers, Diane’s longtime enemy.
When she was caught, Phyllis and Jack used this opportunity to blackmail her for custody of Kyle.
Struggling financially and emotionally, Diane found herself seeking comfort in the arms of Victor Newman once again.

When Victor discovered the truth, he proposed to Diane, and she accepted.
However, Diane soon caught Victor and Nikki Newman cheating for the second time.
She took matters into her own hands and shot incriminating pictures of their affair.
In anger, Victor stripped her of her financial security, leaving Diane desperate for money again.
Jack surprised everyone by proposing to Diane, who rejected him due to the disapproval they faced.
Eventually, Diane accepted and they set their sights on a future together.