When New Jerseyan Carly Fairweather learned that her Steamboat Springs cousin was getting married this summer, she and her husband Sean Lenahan decided to take a road trip throughout Colorado with their dog, Little Bit. While the couple intended to make unforgettable memories, one experience came about unexpectedly — and they’re unlikely to ever forget it. The couple lost their precious pup for three weeks as she traveled far and wide across Rou…