Your posting does not include any specific questions. If you are considering the possibility of marriage, and then applying for permanent resident status based on your marriage, then unfortunately, at this time, you are not eligible.
There is a possibility of change in the future, but we have no idea if the law will change or not. Perhaps the Defense of Marriage Act (DOMA) will be invalidated as unconstitutional, perhaps as early as next month. Perhaps there will be changes in immigration law that will help you to be eligible for a green card as the spouse in a same-sex relationship. But, as of today, it is not possible.
You might consider other ways of obtaining either temporary or permanent immigration status in the USA, and/or wait to see if there are changes in the law.