Betrayed like a bride in church may be (5,4)

I believe the answer is:

given away

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'betrayed' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Maybe they are linked in a way I don't understand?

I don't understand the rest of the clue.

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I've seen this clue in The Irish News and The Globe and Mail.

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