Before you get married, don't hide things from your boyfriend unless you don't want to be with him in the future. It's no use hiding anything now. When he finds out later, the result will be uncertain. Tell him when it is better to contact. Otherwise, even if we are together now, it is a waste of feelings and energy. Sooner or later, it's an empty thing that shouldn't and can't be avoided. Don't hide yourself. The final result won't get you what you want.