It could be because such cartoons aim to explore diverse emotions and relationships. Or perhaps to attract attention with an unconventional theme. Sometimes, it's just the creator's imagination at work.
Well, such cartoons might be made to challenge societal norms or to provide a fresh perspective on love and acceptance. They could also be a form of artistic expression, showing that all kinds of love can be represented, even those that are not typically shown.
I'm not sure I know of any specific cartoons like that. Maybe you could look for some indie or lesser-known ones.
There are a few like 'Zootopia' where some cute animal characters might have shown such affectionate moments.
One such cartoon could be 'Hey Arnold!' where there are characters with a chubby appearance.
They can be really hilarious! The way they exaggerate the characters' features and actions often leads to lots of laughs.
They can be quite hilarious. The combination of a fat mail character and funny situations often leads to lots of laughs.
You might want to check out 'Rugrats'. It has diverse characters, and there are instances where some of the kids have a bit of a rounder appearance.
One such manga could be 'My Big Fat Secret'. It tells the story of a fat girl's journey of self-acceptance and growth.
One popular one is 'The Princess and the Frog'. It has some cute scenes of frog kissing.
One such cartoon could be 'The Baby Bears' where you might find cute scenes of babies kissing.
Maybe it's because such a storyline doesn't fit the typical themes or target audience of Supergirl comics. Or it could be that the creators haven't come up with that idea yet.