It's great that you lost weight, just not how it came about. Glad you have your family to help you. I know you hate to sit at the computer and complain about bulls***, but it helps you heal, so do it. We care about you enough to listen. Just remember, this to shall pass. Time does heal all wounds. It just won't happen over night.
As for your fiancee, kick his a** to the curb for good. It will hurt, but it needs to be done. My daughter's dad left me and played the on again, off again bulls***, while he was playing the same game with his girlfriend. It ain't worth it. Nobody wins in the end, nobody, espically the kids. They are the ones who really gets. Don't do it to your kids, it ain't worth it. You don't want them to hurt like you do. They might blame you because they are mad, but it's the best for them when they grow up.
As for your fiancee, kick his a** to the curb for good. It will hurt, but it needs to be done. My daughter's dad left me and played the on again, off again bulls***, while he was playing the same game with his girlfriend. It ain't worth it. Nobody wins in the end, nobody, espically the kids. They are the ones who really gets. Don't do it to your kids, it ain't worth it. You don't want them to hurt like you do. They might blame you because they are mad, but it's the best for them when they grow up.