Legislation for gay marriage is approved in the UK House of Commons!

[A Theist]

Ok, but my question was really in line with romantic relationships, rather than just friends. Do you accept that people can have romantic relationships which are not based on sex? Furthermore, would you support same-sex relationships that were strictly celibate, or would you still find them wrong / unnatural?

Regardless of celibacy, I would still find romantic relationships between same gender couples to be unnatural. I would also add that since natural physiology does not support same gender sex, I believe it's a lifestyle that people choose for themselves rather than being born gay or lesbian.

I imagine that it would have always been a cultural thing...A rational thinking culture would realize that gay / lesbian sex and relationships are unnatural and would rather legitimize the natural relationship between a man and a woman.

I'm not sure I understand your logic. If marriage is defined by culture, then rationality has nothing to do with it; it's purely democratic...how people feel at the time. It wouldn't matter if people found gay relationships unnatural, it would only matter if they thought that people who were gay deserved the right to marry each other. So I'm not sure how you can switch between saying marriage is defined by culture, and then say that it is somehow dependent on rationality. It seems to suggest that you actually think marriage is set in stone, and that if the culture redefined it, you would disagree. So I don't think you've really answered the question; who do you think marriage is defined by? That is to say, who could stand up and say "gay marriage is perfectly normal" and you would have no choice but to agree with them?

I mean that a rational thinking culture would consider that same gender sex and relationships are biologically unsound and unnatural and would not embrace it. I have to say that no one could convince me that gay relationships are normal. The physical anatomy just doesn't support it. I still believe it's a mental disorder.

But...from your answer in (3) you state that marriage is defined by culture. The culture at the time was that marriage was only between men and women of the same race. So, how can't interracial marriage be considered a perversion of real marriage in those terms?

The difference between interracial marriage and gay marriage is that our anatomies don't support same gender sex.

Again, I think this is confused by your answer in (3), which doesn't seem to accurately reflect your beliefs here. You claim culture defines marriage, but you consistently argue from a position which seems to place nature higher than culture.

I think that in some cases a culture would take its cue from nature.

***EDITED TO FIX QUOTE BOXES - DeistPaladin***