We were pretty good mates until the Beatles started to split up and Yoko came into it. It was more like old army buddies splitting up on account of wedding bells.

McCartney frames the Beatles’ breakup in terms of male camaraderie disrupted by adult life changes. By likening the band to “old army buddies,” he emphasizes shared hardship, loyalty, and a tight-knit identity forged through intense collective experience (touring, recording, fame). The “wedding bells” metaphor suggests that romantic partnership and domestic priorities can redirect attention and allegiance, creating emotional distance within a previously all-consuming group. Mentioning Yoko Ono reflects a common narrative—especially in early post-breakup discourse—that John Lennon’s new relationship altered band dynamics. The quote is less a factual causal account than an image of how friendship can fray when personal lives evolve and a group’s center of gravity shifts.