They need to build that trust back up by proving it

It's can be restored but you have t ok be willing to work at it together

Without trust you have a disaster on a detonator

Normally doomed to fail if their isn't people involved that can't sacrifice it all for the relationship.

Depends on the actions taken to fix or repair what is broken

It can be repaired, but it takes a lot of time, effort, & patience.

Idk

See you again wiz Khalid

Depends on how forgiving the person is who had their trust broken and if they're willing to work through whatever is necessary to earn their trust back.