“Two of Us” is generally understood as Paul McCartney writing about carefree drives and time spent with Linda Eastman, with lyrics inspired by their relationship and little road trips together. It’s also often heard as reflecting the band’s breakup-era bond between McCartney and Lennon, which gives the song a bittersweet edge.

What it’s about

The simplest reading is that it’s a love song about two people enjoying being together, even when they’re just wandering around and “going nowhere”. McCartney later described it as being about those outings with Linda, including the postcards reference in the lyrics.

Why people debate it

Because it was recorded during The Beatles’ final stretch, many listeners hear the song as a quiet comment on McCartney and Lennon’s relationship as the band was coming apart. The harmonies and nostalgic tone make it feel like both a personal love song and a farewell of sorts.

In one line

It’s mostly about Paul and Linda’s relationship, but it carries an extra layer of meaning because it was written during The Beatles’ breakup.

TL;DR: a gentle road-trip love song on the surface, with a possible deeper reading about The Beatles themselves.