Sister In Law's Wedding, husband and I separated. Should I go?

by NR
(Chicago)

My husband and I recently separated (less than a week ago). His sister's wedding is this weekend. We where both invited over 6 months ago. I initiated the separation, many trust issues with him. I am really contemplating divorce. I did send her a text letting her know I was not going to make it, due to the circumstances but I wished her the best. She said hopefully we can work out our problem so I could go. She said to go still. I would like to go, I would feel ackward. Im not sure how I would feel seeing him. I do not want him to sweet talk me, and con me to taking him back. He betrayed me and at this moment I cant look past it. What would be the "correct" thing to do?