You Still Belong to Me" by DJ Kane matches the lyrics closest to "But you still belong to me."
The song includes the lines: "You can run away but you still belong to me. All your love will stay no matter if I set you free."
Another close match is the classic “Tonight You Belong to Me,” popularized by Patience and Prudence, with lyrics like “I know you belong to somebody new, but tonight you belong to me.”
No i dont think its the actual chorus
But-you-still—be-long—to-mee-eeee
Perplexity suggests: