To those who are coming to this thread to find an advise with a similar situation.
Everything went fine for me and we already have our visas.
What I sent:
- certified copy of our marriage certificate.
- reference from a regional authorized officer stating that we both leave at the same address.
- reference from our gynecologist stating that we are consulting with her about our family planning.
- references from our phone operators confirming our phone numbers
- a call log from our phone operators showing all our conversations with dates and durations for 1 year.
- printed photos of me and my wife together from different periods of our relationship (I color printed them an A4 sheets with comments below each photo about when these photos were taken)
- reference from our bank showing that I have a bank account with XXX amount on it and confirming that my wife's credit card is attached to my account. I tried to make a joint account but seems like in my country there are no joint accounts.
Also I mentioned in the cover letter that our relationship is traceable via Facebook, and wrote our accounts addresses.
That’s it.