French Fancy by Lily Morton

Pip Simmonds is the twinkiest twink in London. He’s loud, proud, and packed to the brim with sass. But when he’s laid low by illness, even his hotpants lose their sparkle and his worried boss sends him to the South of France to recuperate in his holiday home.
Saint-Jean-Cap-Ferrat is beautiful, and the periwinkle-blue villa is luxurious, but the real draw for Pip is the villa’s other resident—his boss’s younger brother, Olivier Durand.
Olivier owns a perfume empire and has spent his whole life running from any other form of commitment. He’s worldly, carefree, wild, and the perfect choice for a holiday fling.
Drawn together by proximity, the two men become lovers and friends and then something more. Something special. But will their special bond hold true after summer’s end, when they both must return to their real lives?