Related Clues:

• Captivate
• Plague
• Haunt
• Control
• Lose sleep (over)
• Dwell on
• Can't stop thinking about something
• Dwell
• Preoccupy
• Fixate (on)
• Dwell (on)
• Prey on one's mind
• Think about too much
• Have fixations
• Preoccupy excessively