Sexuality (not sex scenes) should not be a taboo trait for a character, or a person. It's still PG13 to be human. Looking at past films and TV shows, even those aimed at children, you can clearly see some characters being flirty, some characters falling in love or being very attracted to the obviously attractive counterpart. Who Framed Roger Rabbit is probably the most extreme example, but almost everywhere, from Looney Tunes to Terminator, it was OK to be attracted to a beautiful character.
The gist of this post is that this is mostly gone from MCU-like movies, and this makes sense because little kids want explosions and references instead of human connection. I tend to agree although there are still movies today that don't fall into this category.
> little kids want explosions and references instead of human connection
Another hint from extremely fandom-orientated movies like this: just as kpop bands aren't allowed to have boyfriends/girlfriends, maybe the relationships are taken away from the characters to allow the fans to develop the more intense parasocial relationship with the character/actor without any onscreen partner "getting in the way"?
The gist of this post is that this is mostly gone from MCU-like movies, and this makes sense because little kids want explosions and references instead of human connection. I tend to agree although there are still movies today that don't fall into this category.