Jacinta calls out Gar for pretending to be happy about Dearbhla's big move to the US in Tuesday's Fair City on RTÉ One and the RTÉ Player.
"All this pretending to be over the moon for her and throwing her parties..." she says.
"This is called being supportive," replies Gar.
"It's called fooling yourself in my book," says Jacinta.
Fans can find out what happens next on Tuesday on RTÉ One and the RTÉ Player at 8:00pm.
Fair City airs on RTÉ One and the RTÉ Player on Sundays, Tuesdays, and Thursdays.