Possible Clues:

• 'This can't be,' in texts
• Texter's 'No way!'
• Texter's "I can't believe this"
• Texter's "No way!"
• Texter's ''Unbelievable!''
• 'can't believe u did that'
• “I can’t believe this,” in a text
• [facepalm emoji]
• 'i have no words, ugh'
• "I disapprove," in textspeak