Jacinta forces Fergal to pick a side in Tuesday's Fair City on RTÉ One and the RTÉ Player.
When Liam condemns Jacinta's parenting, Jacinta delivers her ultimatum.
"He betrayed you," she tells Fergal. "I stood by you. So you make your choice: him or me."
Fans can find out what happens next on RTÉ One and the RTÉ Player at 8:00pm.
Fair City airs on RTÉ One and the RTÉ Player on Sundays, Tuesdays, Thursdays, and Fridays.
