This Is La Roux's Fourth Single From Their Self-Titled Debut Album. Elly Jackson Explained Later Why It Came Out In The Summer "I Think Sunny Weather Drives You Towards Certain Tempos And Melodies That Work Well Booming Out Of Open Windows. It's About A Boyfriend Who's Cruelly Playing With A Girl's Heart Was Inspired By An Actual Long-Term Relationship That I Was Involved In."