OK, let's subject it to the test. Being black changed who you can marry, a violation of the 14th amendment. Being gay doesn't change who you can marry. Oops, we subjected gay marriage to the test, and it failed...
The same sex marriage bans absolutely changes who you can marry. As a lesbian couldn't marry another lesbian.
No, a straight woman cannot marry another woman either. The law is applied equally. Fail.
The same sex marriage bans absolutely changes who you can marry. As a lesbian couldn't marry another lesbian
A straight can't marry another lesbian either. Fail.