I love my fianc� but still think my ex was better :/ But too much has happened between us.. help?.. advice?..?

There is not love like your first love but you can't let go, because you need closure. You have unfinished feeling with your X. You do need to talk with him and finish it once and for all. Then you can move on. Don't go with the assumption of getting back together, just see how he feels and talk about how you feel and say good by. You cannot be in another good relationship until you finish the X relationship. Or you can just accept that it is over with your X and just deal with it. I have always thought if you break up with someone, there are usually good reasons and never go back bu that is me. If you have a great thing going, don't mess it up.