She was stuck at the top of a broken Marris wheel when the stallion in the next gondola over started talking to her. With nothing else to do, she talked back. Once the wheel got fixed, they agreed to keep talking. Now, they wander around around the carnival, conversing about nothing in particular. Growing up, griffons, mortality, stars, rigged carnival games, alicornhood, whatever crosses their minds. It's a great way for them to get to know each other.
But they only have until the carnival closes. After that, they'll need to go their separate ways. Even if they don't want to.
Inspired by Before Sunrise.