For the first few seconds, Giovanni tentatively moved his lips against his unmoving mouth. His movements were quite hesitant as if he was both exploring the feel of his soft mouth but also afraid to shatter the fragile moment. He was actually kissing Luciano. Luciano was letting him kiss him. He was moving his lips against the lips of the hellion who had been stalking him for years.
Luciano surprisingly did not immediately push him away which left him confused.
Why was he not pushing him away?
Was he genuinely curious to answer the question about if he was a man who laid with other men? Giovanni was mostly joking when he suggested that Luciano had to do something with a man to determine if he was attracted to men. When he was younger, he did not really need someone else to confirm that he was attracted to both men and women. He just knew somehow.
Tom Hiddleston merely set it in stone.