Man in trouble for sleeping with his girlfriend's mother

A young man is in trouble for sleeping with his girlfriend's mother after the woman seduced him into the act.

The young man who is currently feeling guilty after the act has confessed he doesn't know what to do. He is confused about whether to confess to his girlfriend or not. He narrated the incident blaming the woman for the act

According to him, he was in the kitchen when his inlaw appeared and asked to lick his private part, he then foolishly agreed instead of proving his resistance. This further led to him sleeping with her.

He is asking your help whether to report himself to his girlfriend or not because he is feeling guilty every time.