Guys, i just wanna say, me (19) and all my friends (including people you can think of as "straight") dont really care much about labels. We go out with whomever we're attracted to (not just their looks but also hobbies, interests, etc.), our friends (and most of our parents) are very supportive, all they care about is whether that person is lifting us up or draggin us down. We feel like labelling is like putting ourselves in boxes, we're young and we want to explore what's out there, there're much more to a relationship than just where the "meat" encounters.
I understand that labelling might give older queer people (or queer people in places of less acceptance) a sense of belonging, or a way to find themselves a place where they can feel safe and be who they are, but at some point, in certain communities, we gotta start aiming for a world where queer/straight division is much less a thing, and de-labelling does help. Love is love, more joys and less aches, that's all.
Btw, Kit, Joe, and all the cast members are just so cute together. I wish them success, and happiness, really hope they can stay friends long after Heartstopper. xx