My take on the confusion is this: There should not be any confusions regardless of what one may think! We always look back to find the truth behind things we normally do and changed. Any changes should have some documentations. In this regard we could compare what is happening to what has been the original things that we human normally do. On this issue, we have the bible to help and if we chose to use the Bible there won't be any confusions. We should read the book of Genesis and this would provide us the truth behind the word Marriage. How God Created Man and then Women so that they would a Companion and then Marriage happened. There is never in the Bible where it talked about a Man marrying a Man or a Woman Marrying a Woman. Anything that is done otherwise is not from the Creator but from Man. And man always defies God since the creation. However man is always wrong. What we needed to do is never allow such practices to happen.