I know both myself and my children had/have roughly the same reaction to on-screen romances. Grossed out. That's for boys and girls. Even a quick peck would illicit the same reaction, let alone some grand show of PDA.

Its one thing in "all ages" media where you could argue its meant to appeal to teen girls or something, but in clearly defined kids shows like this its absolutely always meant to push something on someone. Whether that's gay agenda, Early Porn Introduction, or just shipping war nonsense.