I would support them. I like all genders, although I'm mostly into women, so why should I get a divorse? Also, if you really love someone why should it matter? I also believe that if you have fallen in love with a transgender person in the first place, you're already a little gay/straight. It doesn't matter if the person didn't know who they are/came out to you until later - they were always the gender they are transitioning to, which means you loved a person of the opposite/your own gender.