Hi, sorry that you are going thru this as I too went thru this. still am. I'm american and my fiance is english. Honestly, the quickest way to do it is probably the fiance visa. Going into this relationship, we both knew that in the end, if things went well, then we'd have to get married. I am currently here in england for 6 months. I'm in my 5th month. This was a trial for us to see if things worked. and it did! We are now happily engaged and I can't wait to marry him and live happily ever after. But, I do have to go back to america and apply for my fiance visa. which I heard takes less than a month to get. though it varies. I suggest the 2 of you do this 6 months thing as a trial. See where things go. Good luck!