Yes. Regulations issued by the United States Department of State, the federal agency in charge of issuing passports (of which, incidentally, Hillary Clinton is the head), acknowledge that your legal name is determined by the state and if your state recognizes same-sex marriage, then you are entitled to a passport in your married name.
The exact citation of the rule is "7 FAM 1359 Appendix C." (Follow link below and scroll down.) If you have any trouble from a passport agent, refer him or her to that regulation.
Yes. A certificate of marriage, regardless of where it was issued, is sufficient proof of legal change of name for a New York driver's license. The gender of your spouse is irrelevant.
I don't think you can. You either has to be single or married to adopt. Just living together is neither. if you are in a samesex relationship and has gone through partnership might be possible though.
Anyone can do anything they want to as long as they truly want it. No, in Islam having a boyfriend/girlfriend type of relationship is not allowed whether your a male or a female and whether the bf/gf is Muslim or not. If you have anymore questions regarding the matter, just ask and I'll be happy to answer them. i gree in islam having a boyfrnd or a grlfrnd is not allowd but today no youngr generation follows it .....so if a muslim girl personlly like a non muslim boy...then it is not allowd in islam.....u cannot marry him unless he accpts islam...:)