Your husband konig had been having and affair with your best friend since you told her you had fallen in love with each other (7 years) she knew how much you loved him too.

He left hints but you were oblivious since you were focusing on your job so that gave him the chance to have that affair.

You found out when entering his office and seeing your best friend in his lap kissing him but the both noticed the presence of you and they froze seeing you there crying while holding his lunch.