Here is an argument they can use, easily. Age of consent in many states is 16. Right now, someone at the age of 16 can get married with parental consent. It wouldn't take much to change that to not needing parental consent and lower the age to say 14 or even 12. If a 12 year old can make the conscious decision to have sex and get pregnant, why should they be considered not able to give legal consent in other areas of their life? If love has no boundaries between sexes, then why should it with age?
Have you not seen what has happened to many churches that have been forced to accept same sex marriage? And yes I do mean forced. Many churches individually do not choose what they accept and reject, but is based off of regional organizations. In the midwest, after the Methodist church decided to allow same sex marriages to take place, many pastors have resigned, and many people left the church. This is all a result of the government legalizing something and the "church" trying to protect themselves from non-discrimination laws. By them having to do this, this is a direct violation of the purpose behind the separation of church and state, which was to keep the GOVERNMENT from telling the CHURCH what they are allowed to believe and practice. The original intent was not to keep the church out of the government like people like you want to believe. So although the "churches", or mainly the regional organizations they are apart of, have accepted same-sex marriage, that doesn't mean the individuals within the church do feel their rights haven't been infringed upon.
And I never said that it was a solution for gay people to marry who they don't love, I was merely stating the FACT that they had the legal right to get married, regardless if it was someone they didn't love. Like I stated before, if this was all about "rights", then there was another way this could all have been accomplished without infringing on the rights of other individuals. Would it have been easy, maybe not. However it still would have allowed one group to gain certain rights without infringing on the rights of others. The fact is that this had nothing to do with rights, but everything to do with forcing the LGBT viewpoints onto others. I should have every right to refuse business to anyone, regardless of my reason why, and not get sued over it. Why should my personal and religious rights be compromised for someone else's "right" to marry?