The 35-year-old 'X Factor' judge opened up about her split after watching a singer perform an emotional track at the auditions of her show in Cardiff, reported Contactmusic.
On listening to the song, Scherzinger said, "It pulled my heartstrings" and then empathised with the teary lyrics about the end of a relationship.
"It sucks doesn't it? Really sucks", she said.
Scherzinger and Hamilton called off their five-year-old relationship due to their hectic work schedules.