It's certainly possible to have 'happier' complications though, I think GP has a point. As one might enjoy crime drama, but not gratuitous violence, say.
"I don't know what people find romantic about this nonsense"
It's fine to have different literary preferences than some other people. As you say, "one might enjoy crime drama, but not gratuitous violence". But to question the literary preferences of other people is an entirely different matter.
"I hate this stupid trend."
It's not a trend. Writers have been writing about love triangles and marital infidelity for literally centuries.
I think romance as a genre has changed though. Today's romance is multiple people being involved in some weird interplay between each other and that is the main focus of the story.
Whereas romance from a century ago is more about two people fighting against adversity to be together or to remain together.
