You may have been unadded on Snapchat if you can’t see their Snap Score, your snaps show “Pending”, or their profile no longer appears as a friend. You can still search their username, but you won’t be connected anymore.
You can tell someone unadded you on Snapchat if: their Snap Score disappears, their name no longer appears in your friends list, or your snaps go from “Delivered” to “Pending.” Also, you may no longer see their stories. These are signs they removed or blocked you.
Yeah, there’s no alert, but you can check a few things, if their name disappears from your friends list, you can’t see their Snap score, or your chats show “pending,” they’ve likely unadded you.