What is Three Days song Last to Know about?

The song "Last to Know" by Three Days Grace is about feeling betrayed and hurt by someone close to you and the emotional turmoil in learning about and coming to terms with the betrayal .The lyrics portray feelings of shock, anger, resentment, sadness, doubt, confusion, vulnerability, helplessness, loss in control in learning your trust has been broken. The singer expresses that despite these feeling , they will find the strength to carry on