You can tell when someone replayed your Snapchat story. It might show up as a special icon or a number next to their name. But the exact way it shows can vary depending on the app's updates and settings.
Yes, you can know. Snapchat has features that let you see when someone replayed your story. It could be something like a small symbol or a count. However, it's important to note that these indicators might change over time as the app gets updated.