hi joe!
thank you for your advises during my application.
my partner and I were living together in london for 3years before my daughter and I left the UK. I had tried to apply for unmarried partner because i think i am qualified.
Reasons:
1. we have daughter who is now 4yrs old. She was 2 1/2 years old when we left UK.
2. i had letters dated since 2005 which shows the same address as him. I also showed his billings and some letters.
3. we got pictures with printed dates that shows we were leaving together for at least 3 years.
i will post the documents i had submitted to the embassy. Hope it will help.