Ah!!! Thank you so much!
An early-access version of the game with 7 chapters will be released on March, probably! And the full version should be released by May/June. =)
I'm so happy you liked the demo, hopefully the full game won't be a disappointment!
P.s: You can actually romance all 3 of the characters and choose one particular romance later on in the game. =) They all have their own timeline in the game, so it's possible to romance all 3 in the same playthrough without breaking anyone's heart. :P