Welcome to the boards Tess, or do we already know you?
If you are already married, you owe it to yourself and him to figure out what changed the feelings, if you don't already know.
If you do know, and it's way past any chance of staying in the marriage, then as gently as you can, tell him. But tell him in private, some time when you two have a chance to talk. But be honest, if there is no hope, don't try to give him any. It just confuses everyone. It won't be easy, either the telling or the watching him react.
hang in there
*I just saw your next post. You are very smart. I'm glad you have been thinking and don't want to make a mistake. Tell your fiance the truth. It's gonna hurt both of you, but this will be better in the long run for both of you.
But I wouldn't give up on each other, if you love each other, and I'm hoping you wouldn't have said yes in the first place if you didn't. There is still hope that one day you two will see your way back to each other and maybe it'll work then.
