The song opens with a nostalgic tone, setting the stage for a love story that feels both personal and universal. The lyrics describe a couple who have grown up together, highlighting their shared experiences and the innocence of young love. The mention of specific locations, such as the 'Eastside,' serves as a metaphor for their journey together, symbolizing the place where their love blossomed. As the song progresses, the chorus emphasizes the idea of commitment and the desire to stay together despite the challenges they may face. The repetition of the phrase 'I wanna be with you' underscores the longing and determination to maintain their bond.

In the verses, Khalid and Halsey take turns expressing their feelings, which adds depth to the narrative. Khalid's verses often reflect a sense of hope and optimism, while Halsey's contributions bring a touch of vulnerability and realism to the relationship. This interplay between the two artists creates a dynamic that resonates with listeners, as it captures the complexities of love.

The bridge of the song introduces a moment of reflection, where the couple acknowledges the passage of time and the changes that come with it. They reminisce about their past, recognizing that while they may face uncertainties, their love remains a constant source of strength. The lyrics convey a sense of reassurance, suggesting that as long as they have each other, they can navigate whatever life throws their way.

Overall, "Eastside" beautifully encapsulates the essence of young love, blending nostalgia with a hopeful outlook for the future. The song's relatable themes and catchy melody make it a memorable anthem for anyone who has experienced the highs and lows of a romantic relationship.

Upon its release in 2018, "Eastside" resonated with a generation that values authenticity and emotional connection in music. The collaboration between Benny Blanco, Khalid, and Halsey brought together three influential artists, each with their unique style, contributing to a sound that reflects contemporary pop culture. The song's themes of love and nostalgia are particularly relevant in today's fast-paced world, where many young people seek meaningful connections amidst the chaos of modern life. The song's success can also be attributed to the rise of social media, where fans eagerly anticipated its release and shared their excitement online, creating a sense of community around the music.