He was at a housewarming party. She ended up at the housewarming party. A few hours later, a mutual acquaintance says "You both like to travel, you should talk". He just came back from Croatia. She just got home from Costa Rica. She asks "Do you want to go to Peru with me and hike the Inca Trail?" He said "Yes"
Life coming full circle. Fast forward 3 years. They finally take that trip to Peru and hike the Inca Trail. On the last day of their hike, at the very top of Huayna Picchu, where the air is thin and their legs feel like mush, Michael gets down on one knee with the famous ancient ruins of Macchu Picchu as his backdrop, and asks Dulcie to start another adventure with him. She said "Yes!"