If you're interested in reading the Kama Sutra in Sinhala, you can find a PDF version online. Here are a few sources:
1. ජීවිතයේ අරමුණු තුන (The Three Aims of Life) kaama sutra sinhala pdf
Contrary to popular belief, the text emphasizes mutual respect, communication, and affection between partners rather than just physical mechanics. Sinhala Translations and Related Works Many people in Sri Lanka seek Sinhala PDF If you're interested in reading the Kama Sutra