General Hospital Relationship Timeline: Ned And Olivia

Julian soon learned the baby was his, so Ned took the child out of town. He eventually returned and proposed to Olivia. She turned him down, but after an encounter with gunmen, she reevaluated her life and ended up proposing to him. Ned didn't want to be associated with his father, the scoundrel Lord Larry Ashton (Hugo Napier), so he changed his last name to Quartermaine. The couple married in 2017, and Olivia moved into the Quartermaine mansion. Julian and Olivia had made peace by this time, and after a while, she let him have access to Leo.

In 2019, Olivia asked Robert Scorpio (Tristan Rogers) to take her to see her older son, Dante Falconeri (Dominic Zamprogna), who was recovering from PTSD in Geneva. After Dante refused to see her, she helped Robert on a mission in Monaco. Ned was furious that Olivia ran off with Robert, and assumed the worst. He commiserated with Alexis, and the two got drunk and ended up sleeping together. When Olivia returned to Port Charles and explained everything, Ned tried hard to keep the tryst a secret. 

But then, in a profoundly ill-advised move, Ned confessed that he slept with Alexis to his aunt, Monica Quartermaine (Leslie Charleson). And, when Ned's mother, Tracy Quartermaine (Jane Elliot), came back to Port Charles, she was able to squeeze the information about Ned and Alexis out of Monica.