Check your Friends list and compare it with a previous list or screenshot
Search the person’s name in Facebook to see if they still appear as a friend
Visit their profile to see whether the Add Friend button appears instead of Friends
Review your Activity Log for friendship-related changes
Use the Download Your Information tool to export your friend list and compare it with an older copy
Check mutual friends to confirm whether the person is still connected to you
Look for missing posts, tags, or interactions that may indicate they removed you
Use a trusted third-party friend tracker only if you understand the privacy and security risks