Who can sign an affidavit?

[joebloggs]

In March this year, we applied again for a visitor’s visa, but this was again turned down, this time for supplying false information – unfortunately some confusion over what the question was asking, meant the previous refusal in China wasn’t stated.

if she was refused for supplying false info she must have received a ban from coming to the uk for upto 10yrs

if you could live with her for 2 yrs outside the uk, you might be able to apply for a un-married partner visa but its more difficult to get than the other visa's
and was ur g/f banned from the uk, thou the ban might not apply to un married partners..

[IainBusby]

if she was refused for supplying false info she must have received a ban from coming to the uk for up to 10yrs

Joe's right, unless she can explain the apparent discrepency in the information she supplied, to the satisfation of the ECO, then I think she would be banned.