I485 question, please help

[Needadviceplz]

I was in a common law relationship in Canada a long time ago and I obtained Canadian permanent resident card through this relationship . That relationship ended four years ago. I am now married to a US citizen and in the process of applying for a green card. My ex and I didnt file any paper work for the separation since it is not required under the Canadian law. My question is, am I required to disclose my previous relationship on my I 485 form under the section where it asks your previous marriages? If so, how should I disclose it? I don't have a "divorce" date or a file number to prove that relationship ended.

I am sooo worried right now and any input would be appreciated!

[michou]

Were you married to the other person? or was it just a relationship? .