Both should be reprimanded for such a sick joke! However, the divorce doesn’t take place unless he intended the Khula’a!

I wanted to ask..if husband and wife are in a jolly mood.n if wife simply asks husband that if ever I needed a khula will u give me.der is no intention of taking khula.n the husband also jokingly says yes he would give.does dat mean dat da khula has been done.or da separation took place.will they become Haram for each other.even if it was just a joke