The opening gambit is a corker. "Ain't no winners when the house burns down" is a line a lesser writer would save for the climax. Kasper throws it down at the start like a gauntlet and dares the listener to keep up. What follows is a portrait of a couple "trading heavy blows, walking on a tightrope," and the imagery is sharper than the genre usually bothers with. The tightrope is the right metaphor, because the song never pretends the fall would be painless. Nobody here is a villain. Both parties are simply tired, a little frightened, and a long way from the spark that began it all.

What lifts the song above the usual relationship post-mortem is its sly sense of arithmetic. "You give some, you get some back, where do we align?" is the sort of question that would sound absurdly clinical in anyone else's mouth, as if love could be audited. Kasper sings it with such weary tenderness that it lands as heartbreak instead. Then comes the true sting: "Got the money on our mind, leaving love behind." It is the most unglamorous line in the song and perhaps the most truthful. Rent, bills and the grinding small print of adult life are as likely to wreck a romance as any betrayal, and rarely does a pop song say so out loud. Kasper does, without self-pity and without a trace of sermonising.

Then the chorus arrives, and here the writing earns its keep. "Yeah, it's a give and take, tell me what's the cost, when you win the fight, but the love gets lost." A hook that is also a thesis is a rare and welcome thing. It is catchy, certainly, but it also carries the weight of the whole argument: that victory over the one you love is the most hollow triumph going. You could hum it on the bus and not notice you were being quietly lectured on emotional intelligence. Better still, the question is left hanging, as it should be. Kasper offers no neat resolution, because the couple in the song has not found one either.

The title does a lot of work too. "Give and take" is a phrase so worn it has almost stopped meaning anything, a cliché dispensed by relatives at weddings. By the final chorus Kasper has restored its sting, reminding us that the balance it describes is something fought for daily, not achieved once and framed on the wall. The song's great trick is to make that struggle sound like a form of devotion. Two people still bothering to argue about the terms are, after all, still in the room.

In a pop landscape crowded with breakup anthems and reckless declarations, "Give and Take" is a small act of rebellion: a song about staying, and about the unfashionable, unglamorous work of making love last. It is honest, wry, quietly devastating and, crucially, hummable. Kasper has written the kind of single that couples will argue over and then, with luck, make up to.

Play it loudly, then call your other half.