Lindsay Crane was planning to celebrate her first anniversary with boyfriend Stephen Kenny last Monday in Belfast, Ireland, where they live. Little did she know, Stephen had something much bigger than a typical date night up his sleeve.

Lindsay, who gave birth to the couple's first child together just a week before, opened a card from Stephen the morning of their anniversary. Instead of the usual "Happy anniversary, babe!" message, she found some money and two notes inside. One was the introduction to a scavenger hunt around the west Belfast area and the other was her first clue.

The scavenger hunt was inspired by Lindsay's favorite movie, " P.S. I Love You," a story about a terminally ill man who arranges for his wife to find special posthumous notes from him that take her on a variety of adventures.

"Stephen has a really big personality ― he is always full of surprises," Lindsay told The Huffington Post. "So, when this was all playing out, I was just thinking to myself, 'This is so Stephen.' He's brilliant and very thoughtful."

The first clue took Lindsay to the ice rink where she and Stephen had their first date. An employee handed her the same locker key they used on their date, and inside the locker she found her second clue.

The second clue took Lindsay to the place where she and Stephen first met and worked together ― the offices of customer care provider Concentrix.

"We were very close from the start," Lindsay said of working with Stephen. "He was always teasing me and messing around. We both just clicked. Everyone knew it was going to happen ― we are really well matched."

The remainder of the clues took Lindsay to the restaurant where they had their first meal, to a movie theater, to the hospital where she gave birth to their son, and, finally, to the restaurant where Stephen first asked her to be his girlfriend.

Courtesy of Lindsay Crane

Courtesy of Lindsay Crane

Stephen met Lindsay outside the restaurant, with their favorite song, "The One," by Kodaline, playing in the background and a photographer nearby to capture it all.

Next, he got down on one knee and proposed. Of course, Lindsay said, "Yes!"

"I love how he proposed," Lindsay said. "It just shows how much he knows me and how much he wants me to feel special."

The pair haven't set a wedding date yet, but are incredibly excited for the future.

"I just feel like the luckiest girl in the world to have Stephen, his son, and now our little baby," Lindsay said. "It's amazing. We are all so happy about the news."

H/T Irish Mirror