Lovers in the Dark

I took this picture while strolling at the People's Park. Lovers hiding in the cover of darkness. Talking, saying sweet nothings. But why are they in the dark corners? Are they hiding from someone or something? Is this an illicit affair that must be kept secret? Who knows? But a person once told me "In the darkness, there is freedom". Whether this is true or not, the cover of darkness will always be welcomed by lovers.