Falling Stars

Josh Dun and Debby Ryan are a happy couple. He tells her he loves her on a daily basis, and she can't get enough of him.
But one day, a tragedy happens, that tears the two apart.
Debby has to cope with the death of Josh, and she doesn't think she can.
But a few days later, weird things begin to occur.
Did Debby lose him like she thought she did, or is Josh just one of those falling stars?