I just realised that my fiance had been cheating. I confronted her and she accepted. what should i do?

Be thankful you found out now instead of after you got married. Same thing happened to me, I tried to forgive and forget, but things were never the same. You don't want to start a new life like that. As hard as it is, say goodbye and find someone who will be faithful. There is no excuse for dishonesty. If she truly loved you but was unhappy with something in your relationship, she would have talked to you about it. She chose to cheat on you instead, that should tell you how insignificant you really are to her. I'm sorry this happened to you, I know how much it hurts. Today I can actually be thankful to my ex for doing what he did, because looking back I realize we really weren't meant to be together, and if it wasn't for him cheating, we probably would have been unhappily married by now.

She does not return your love. She has been faking her relationship with you. She does not even respect you. Is that really what you desire in your life partner? You know what to do, so do it

Leave her-

leave her and move on