So im a bit.confused and ur tumblr closed the comments so im asking here; if i only have romance points with 1 person, is it possible to get closer as friends with the others? Like can i focus on the one person's relationship will it put me at a severe disadvantage with dialogue after the ch4?
Romance points are separate from friendship points, so yes! The love interests you didn't choose will have a new counter for friendship points after CH4, so you can safely focus on getting the romance points up for your main one before then.
It will also be possible to max out all the friendships in a single run as well, so I wouldn't worry about that too much either. Unlike the romance route, the game handles the friendships very generously haha