@Kaarme wellcome to yuri shenanigans, I guess... But no, not really, when the setup is an "all-girls" school, project, team, whatever, this is par for the course, it's only different if the setup is different, then, when that's the case, there may be some heteronormative couples, or not at all, but this "everyone's gay" thing is much more common on "all-girls" setup.