Songfacts®:

• On "Summer You Were Mine," Stella Lefty takes a bittersweet look back at a romance that came with an expiration date. The track tells the story of a summer fling that burned fast and cooled off right on schedule when the weather changed.
• Lefty admits she "always knew it would end," but knowing something is coming doesn't make it hurt any less. "Guess a fling is a fling for a reason," she sings, "our love went cold with the seasons."
  
  By the bridge, she's second-guessing the whole relationship, asking, "Was it love, was it lust?" Even though it's over, she still occasionally wishes "things never changed." Short-lived relationships can still leave a deep footprint.
• Unlike tracks like "Boston" (the blossoming romance) and "Lean In, Kiss Me" (the tentative beginning), which were inspired by her relationship with country singer Vincent Mason, "Summer You Were Mine" centers on the awkward aftermath of a breakup. When Lefty spots a photo of the pair in the back of his truck it hints the split wasn't as clean as it seemed, catching that familiar moment where two people try to move on while their lives are still intertwined.
• Lefty co-wrote the track with her regular collaborator Grace Enger and with Konrad Snyder (who also plays acoustic guitar), with Joe Reeves producing. It fits right into the bright, energetic country-pop sound she built on earlier hits like "Boston."
• The track interpolates the melody of The Chicks' 1998 hit "There's Your Trouble," which was written by Tia Sillers and Mark Selby. Because of the borrowing, Sillers and Selby are credited as co-writers alongside Lefty and her team. When Lefty's album Long Way Home dropped in August 2026, there was internet chatter when Sillers and Selby's names were missing from streaming-service credits. Label representatives clarified it was just a metadata glitch; the interpolation had already been cleared with Sony Publishing months earlier in June.
  
  Sillers, who also co-wrote Lee Ann Womack's "I Hope You Dance" and Kenny Wayne Shepherd's "Blue On Black," took it in stride, telling reporters she hoped new listeners would enjoy Lefty's song and discover the original Chicks classic. Selby passed away in 2017, making this a posthumous credit for him.
• Tucked late in the Long Way Home tracklist, between "Good At Leaving" and "Feel Better," the song is part of a run of material about heartbreak, reflection and moving on. It's a reminder that Lefty's road to her relationship with Vincent Mason included past loves that didn't make it past a season.