Do the pure choices ever lead to sex? The description suggest a strong no to that question but usually in this games the options are between lustful and romantic sex, not sex or no sex... so is this game unique or are the pure routes just a real slow burn?
does it really matter if i choose pure or lust options? is there any real difference in content?
All paths lead to sexual content with the girls, it really just comes down to the type of person we want our MC to be, how things play out in the leadup, and the type of romance we want with the girls. Pure MC is very selfless and respectful. Lust MC is more "grabby" and forward.
Pure MC: "she seems nervous, maybe she's not quite ready to push things further. I should be respectful."
Lust MC: "she just needs a little push and she'll be ready, I should see how she reacts to..."
But for the most part things will still mostly play out the same. Think of the paths as interchangeable... meant to tailor the experience to our tastes and make the game feel more dynamic, rather than majorly changing the experience in some way. There's no 'right way' to play the game, everything is created to make sure we can choose whatever we want.
The biggest gameplay and content differences are between the Dark and Pure path. Lust is meant to be more middle of the road. So if we like being very romantic and sweet, we'll make a lot of pure choices. If we just want to corrupt and have the most content, we'll make a lot of Lust choices. If we want to be an abusive dick and treat everyone badly, Dark choices.
If you look at the Dev Notes, it specifically says the game is not designed to require players sticking closely to 1 path or manipulating stats too much, but rather to just choose what feels right in the moment.
ONLY ever making Pure choices would make the game feel very bad imo, because obviously someone who is "pure" isn't going to cheat on Brooke in the middle of their date with the waitress. But everyone's different. If you want to fuck someone/cheat on someone, do it. It won't have consequences unless you make blatantly dumb choices and go out of your way to try and mess up relationships.