A gay marriage lawyer is a legal professional with specific experience and knowledge of the law as it relates to gay, lesbian, bisexual or transgender marriage and other related issues. Because the laws regarding the legality of gay marriage frequently change and often differ drastically depending on a person's location, obtaining advice from a qualified attorney may be beneficial in order to better understand what legal options are available. A gay marriage lawyer may help people negotiate prenuptial contracts, help a couple obtain legal domestic partner benefits, or assist in other aspects of gay domestic partnership planning. A gay marriage lawyer may also be able to provide advice and guidance to those wishing to challenge their specific state's laws regarding gay marriage.