Hi Jorde, below are the ways you can prove your relashionship:

* joint mortgage or lease documents
* joint loan documents for major assets like homes, cars or major appliances
* joint bank account statements
* household bills in both names
* a statement about how you share housework
* household bills in both names
* mail or emails addressed to you both
* documents that show joint responsibility for children
* documents that prove your living arrangements
* joint invitations or evidence you go out together
* proof you have friends in common
* proof you have told the government, public or commercial bodies about your relationship
* proof you do joint sporting, cultural or social activities together
* proof you travel together
* proof you have knowledge of each other’s background, family situation or other personal details
* proof you have combined your personal matters
* the terms of your wills
* proof you stay in touch when apart

You can find more about how to prove your relationship on this website:

Hope it helps