How come romance is use as short cut to humanize characters?

[Luckyday]

I guess but you just inserting it in like Apritello then it has the opposite effect and comes across grating and shallow. It even worse when you dress it up as something deep like Bella and Edward's from Twilight. It's lazy writing and needs to stop.

I mean would it kill them to show why a character have romantic feelings in a subtle manner?