There are currently many petitions in circulation and organisations supporting same-sex marriage in Australia. The best way to become involved would be to contact an organisation that is active and work with them, as they will probably already have systems in place and have things going.
(Socialists Alliance, Socialists Alternative and Resistance are three socialist organisations that support Same-sex marriage. The Rainbow Network is a same-sex organisation, and places like Family Planning Victoria might be able to point you in the right direction.)
I don't think you can. You either has to be single or married to adopt. Just living together is neither. if you are in a samesex relationship and has gone through partnership might be possible though.
Anyone can do anything they want to as long as they truly want it. No, in Islam having a boyfriend/girlfriend type of relationship is not allowed whether your a male or a female and whether the bf/gf is Muslim or not. If you have anymore questions regarding the matter, just ask and I'll be happy to answer them. i gree in islam having a boyfrnd or a grlfrnd is not allowd but today no youngr generation follows it .....so if a muslim girl personlly like a non muslim boy...then it is not allowd in islam.....u cannot marry him unless he accpts islam...:)