Look, I know I am coming off as
hostile, but this is an issue that hits close to home for me,
and (this is something that you should
really be aware of) your homophobia is no less hostile, although it may be more accepted and normalized in society at large.
Let's get one thing straight: the "true love" that you speak of as being reserved for only a man and a woman knows no boundaries--not gender, not color, not religious creed. My thoughts on gender are already posted
here.
You say you don't understand why gay marriage is "okay." I want to know why it is not "okay." There are certain legal benefits that come with marriage, like sharing an insurance policy. That's the big one if you ask me, especially given the increasing difficulty of getting insurance unless you work full-time at some big company. Why should that and other legal benefits be reserved for heterosexual couples? Because your bible says so? That ain't gonna fly. So why? Because homosexuals are somehow less worthy?
Educate, educate, educate yourself on this issue, please. I am glad you posted your question, and I hope you can stretch your imagination and pull yourself out of the box of prejudice you are trapped in.