They stop replying to your messages for a long time
They leave your messages on seen without responding
They consistently reply much later than usual
They only respond with very short or dry messages
They no longer start conversations with you
They ignore multiple messages in a row
They are active on Messenger but do not answer you
They respond to others but not to you
They avoid engaging with your questions
They frequently change the subject instead of replying
They stop reacting to your messages
They disappear after reading your message
They only reply when they need something
They seem uninterested in continuing the conversation
They mute or restrict your chats
They block or remove you from their contacts
They never acknowledge your previous messages
They take days to reply without a clear reason
They are online but do not open your chat
They open your message and never follow up