Integrating Pairing : Identifying if a device already is bonded

I am currently Integrating the pairing functionality into my custom app.

Basically the flow would be when on_connect check if the address is in the keystore , if it is continue else pairing mode.
However I have not been able to get this check correctly done as the address of the connecting device - Android keeps changing .
I looked at the unbond.py app and it seems to remove all bonds and isnt specific to an address or device to unbond from .

Any pointers here will help .

At present I always need to unpair and repair for me to get my app to continue execution of the rest of the code.

The only time a check for if connection.is_encrypted went through was when i paired via Windows and it used the same address as previous connections.

Issue is seen on pair.py as well where when i restart the app after first pairing it doesnt progress until I unpair and repair on an Android phone.