A young couple in Oregon got their own wedding invitation back in the mail along with a note, a gift and some marriage advice from a total stranger.

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Cassie and Jesse. Credit: Jessica Webb / ABC News

Cassie Warren, 25, and her fiance Jesse Jones, 23, accidentally sent their aunt and uncle a wedding invite to their old address.

“We got the invitation back in another envelope. On the outside of the envelope, it said ‘live long and prosper,'” Warren told…