Justice Anthony Kennedy, writing on behalf of the court, said the hope of gay people intending to marry "is not to be condemned to live in loneliness, excluded from one of civilization's oldest institutions. They ask for equal dignity in the eyes of the law. The Constitution grants them that right."

That sentence alone clearly tells me that they are guaranteed 'equal protection under the Constitution' regarding the right to marry. Probably doesn't to you, but to anyone believing in equal rights to all, it does.