Unobvious in the new demo is the option to activate "Nymph Mode" with one of your first choices. It's a mode that ups the flirtatiousness of Silvana and several of the guys in the game. New dialog options will appear in some conversations and later in the game there will be optional flings with some characters. But beware, indulging in flings can reap unintended consequences (including souring other romances).

If you want your game experience to be that of a more traditional romance (without juicy temptations to stray), ignore the option to turn Nymph Mode on and the flings won't appear, though the characters still will.

Activate the mode by selecting "Smoldering Love" as the book Silvana was reading when her maid Dorothea asks.