Swimming in the dark by Tomasz Jedrowski

You were right when you said that people can't always give us what we want from them. Poland, 1980. Anxious, disillusioned Ludwik Glowacki, soon to graduate university, has been sent along with the rest of his class to an agricultural camp. Here he meets Janusz - and together, they spend a dreamlike summer swimming in secluded lakes, reading forbidden books - and falling in love. But with summer over, the two are sent back to Warsaw, and to the harsh realities of life under the Party. Exiled from paradise, Ludwik and Janusz must decide how they will survive; and in their different choices, find themselves torn apart.