Rayna looks at how her decisions have affected her daughters, and her life. She ends up calling off her wedding on the day of. Luke doesn't not handle the news well. Meanwhile, Avery decides he can no longer attempt to be friends with Juliette because he would rather her be his wife. They get married at the courthouse. Deacon ends up gettings bad news from the doctor that he may have cancer. Gunnar finds out that Micah is not his son, but his nephew. Kiley cheated on him with his brother, Jason. Will and Jeff discover Layla floating in a pool after she took too many pills after Jeff ended things with her.

Rayna in Her Dress - Nashville Season 3 Episode 10

Rayna admires herself in the mirror on her wedding day in this scene from Nashville. She called off the ceremony.
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Scarlett and Deacon - Nashville

Scarlett and Deacon perform on stage on Nashville. "First to Have a Second Chance" is the tenth episode of the show's third season.
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Nashville Season 3 Episode 10 Quotes

All this flirting. All this texting. Whatever else it is you guys [Jeff and Layla] are doing has made this "thing" real in her head. So whatever you got to say to convince her to go with me I suggest you say it, tonight.

Will

Avery: What are we gonna tell her... about us?
Juliette: We'll tell her she came from a place of love, and her parents became great friends.