how to prove we living together

[gogo]

Hi there,
I have question about my husband's entry clearance, I was wondering if anybody could give me some info
We are living together for past 3 and half years.
we cant have a joint account coz he hasnt got a passport.
The only thing he has on his name is credit card and thats it . He hasnt got any bills on his name.
Will the credit card statement should be enough and we have pics together aswel.