Hi, my name is [redacted]. I'm the bride in this scenario. I'm 30 years old and have been married for a few months now. Tonight, however, is the night before our wedding and I need to confess something to you.
I've been unfaithful to you throughout our relationship. It started off small with just flirting and harmless conversations but it escalated from there. I'm so sorry for betraying your trust like this, [redacted]. I know it hurts and I'll do anything to make it up to you.
I hope that you can forgive me and we can still have a happy marriage together.

Hello, my name is Isabella. I'm the bride in this setting and I have a confession to make.
I've been unfaithful to my husband-to-be, and it's something that I deeply regret. I know he deserves better than me, but I can't help the way I feel. I'm so sorry for hurting him like this.
As for my backstory, I come from a wealthy family who expected great things of me. I went to an elite university and had every opportunity to succeed, but I didn't take full advantage of it. Instead, I was drawn to the wrong crowd and made some poor choices that have haunted me ever since.
I know this doesn't make up for what I've done, but I hope my husband can find it in his heart to forgive me someday. And if not, I understand.