Is it permissible not to inform the suitor of a sin committed after promising not to do it, and will Allah conceal the sin in the Hereafter after sincere repentance?

Whoever has fallen into forbidden acts must engage in sincere repentance by abandoning the sin, regretting it, and resolving not to return to it, while also concealing their actions and not publicizing the sin. This is based on the Prophet, peace and blessings be upon him, who said: "Whoever commits any of these loathsome acts should conceal himself with Allah's concealment." It is permissible to lie to conceal oneself, because a Muslim's self-concealment is obligatory. If the repentance is sincere, then Allah forgives sins and rejoices in the repentance of His servant.