A while longer. I had nights, months after the split, where I'd wake up crying. I wish I could tell you more, I wish healing were an easier process.
Do you need someone with you at the wedding or do you have anyone you're going with? I know you will be seeing friends and family all day but if you need someone to be there with you, to help you or be there for you, I'd be more than willing. I know nothing is more important to you than Jessy, especially on her wedding day, but I also know it will still be a painful day for you.