Meaning of "getting to know", "beyond salvation"

[learning_english]

After the diagnosis, getting to know Mary was his salvation.
a marriage beyond salvation

Could you explain the parts in bold?
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Please let me know if I have made any mistakes in any of my sentences.

[Conchita]

'Getting to know someone' means 'having the chance/opportunity to get acquainted/familiar with someone'.

'Beyond salvation' means 'that cannot be saved'.

[learning_english]

Thank you.

[Conchita]

In other words:

A marriage that has to end.

Hope it is clear now.