All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
This husband and wife have to ask Allaah for forgiveness and sincerely repent for what they have done according to what we underlined in Fatwa 86527.
If coming out in the open about their lie now would cause them harm, then it is enough for them to ask forgiveness from Allaah and resolve never to resort to lying and deceit again.
Allaah Knows best.