The Scottish Parliament is empowered to legislate on specific "devolved matters" which have been delegated to it from the Westminster Parliament (the Houses of Lords and Commons that meet in London). Also, the Scottish Parliament is authorized to legislate on any matter which is not specifically reserved for the Westminster Parliament.
Certainly, the Westminster Parliament can pass any law it wishes and that law can be applied to Scotland. However, it appears that marriage law is not among the list of "reserved matters" and that the Scottish Parliament could, therefore, alter the legal requirements for marriage within Scotland.
In any case, it was the Scottish Parliament at Holyrood that enacted a same-sex marriage law on February 4, 2014.
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...:)