how can i break down with my fiancee?

Question

he is sometimes crazy about me and other times he is normal.
sometimes i feel he is really smart enough for me.

Answer 1

All you have to think about is this.. do you love him, does he love you, can you see you living with him happily forever, do you work together to solve problems... think about all those things that you think makes a marriage work.. and then go tell him that you don't think it's going to work and give him the reasons. Don't leave him to wonder what he did wrong. Maybe there are some things that he will be willing to work on.