Caroline Louise Gleich and Robert James Lea met at a restaurant in Salt Lake City in October 2014, when Ms. Gleich received a comment about a photo she had posted of the friend with whom she was having dinner: “Just saw you take that picture, look to your 6 o’clock #creeper.”

Ms. Gleich soon spotted Mr. Lea, who had written the note.

“He was good-looking and piqued my curiosity,” she said. “I just hoped he wasn’t really a creeper.”

Three days later, they enjoyed a first date at Mr. Lea’s home in Park City.

They began dating and it wasn’t long before Mr. Lea was intrigued.

“She had this shoot-for-the-moon mentality that was very inspiring,” he said. “I enjoyed learning about her lifestyle and her sense of adventure.”