Snapchat calculates "best friends" based on the frequency and intensity of interactions between users. The list of best friends, which appears on a user's profile, is automatically generated by Snapchat's algorithm and is not something that users can manually control.
The algorithm takes into account factors such as:
Sending and Receiving Snaps: The number of snaps sent and received between two users contributes to their best friends ranking. If you consistently exchange snaps with someone, they are more likely to appear on your best friends list.
Chatting: The frequency and duration of chats or messages sent between users also influence the best friends ranking.
Story Views: If you regularly view someone's Snapchat Stories and they do the same for you, it can strengthen your best friends connection.
It's worth mentioning that the best friends list is not visible to other users, so only you can see who appears on your best friends list.
Snapchat may continue to update and refine their algorithms, so it's possible that the exact factors or weighting used to calculate best friends could change over time. To get the most accurate and up-to-date information, it's best to check Snapchat's official documentation or community guidelines.