The Forgotten Wedding by Danielle Mara

Professional organizer Emilia Hart believes that cleanliness is next to godliness and a good life is one that is tidy and well-planned. Her own plan includes freezing her eggs, focusing on her career first, and saving marriage and kids for later. Much later.

But when friends convince her to celebrate her 30th birthday with a night of fun in Las Vegas, what begins as a simple night out turns into an alcohol-fueled instant romance.
There’s just one problem. In the morning she can’t remember meeting the man in the bed with her. Oh, and he’s the polar opposite of her idea of Prince Charming.
Outgoing inventor Jefferson Capuano believes a good life is one without limits. Why would you limit yourself with matrimony with an endless supply of beautiful women in the world? Nevertheless, he’s willing to throw his best friend a bachelor party in Vegas. After a night of drunken revelry, he wakes up next to a woman he doesn’t remember meeting. And she’s wearing a wedding ring.

It turns out, Emilia is Jefferson’s brand new wife.
Emilia and Jefferson quickly agree to part ways, but that is where their agreement ends. Divorce or annulment? Messy or tidy? Catholic or atheist? The devil is in the details and these two cannot agree on a single one.
When complicating factors arise, they risk losing everything they have come to value.