Thank you all for your advice.
This is what i am planning now. I am going to visit Marissa in March/April for 2 and half weeks.
I am going to transfer 3k from an interest free credit card into my bank account.
We will then aim to appy for the Fiancee Visa in July/August, after having had 3k+ in my bank account fior 6 months +.
Do they check your credit rating? Can they tell if you are borrowing the 3K?
Is this a good route to take?
Thanks
Andrew