Snapchat's Best Friend list is a feature that displays the users you interact with the most on the platform. The list is dynamic and can change based on your recent interactions. There are a few reasons why someone you haven't talked to in days might suddenly appear on your Best Friend list:
Recent Interactions: The Best Friend list is influenced by recent interactions. If you've recently exchanged snaps or engaged in chats with that person, even after a period of not talking, Snapchat may consider them a top contact based on these recent activities.
Mutual Interactions: If both you and the other person have been communicating more frequently in a short period, you might appear on each other's Best Friend lists because of the mutual interaction.
Other Friends' Activity: The Best Friend list can also be influenced by your mutual friends' interactions with that person. If you and the person in question have many mutual friends who frequently interact with them, it can elevate their position on your Best Friend list.
Snapchat Algorithm: Snapchat's algorithm takes various factors into account, such as the frequency, consistency, and type of interactions you have with a particular user. It may prioritize users with whom you interact more frequently and recently.
Limited Activity with Others: If you haven't been very active on Snapchat or haven't engaged with many other users recently, it could lead to changes in your Best Friend list more easily.
Remember that the Best Friend list is subject to change as your Snapchat activity evolves. It's designed to show you the people you interact with the most actively and frequently at any given time. If you continue to interact with someone regularly, they are likely to remain on your Best Friend list, but if your interactions decrease, they may eventually drop off the list again.