Name of specific genre of Thai music vdos?

[thaibeachlovers]

The ones where a girl is always dumped by the guy for another woman and ends up crying a lot. They have the singer with a backing of dancing girls in costumes interspersed with clips of the little movie where the girl gets dumped.

The music is usually quite jolly, not sad.

On WETV they have a channel with just those music vdos all day.

[Saastrajaa]

Sounds like luk thung, though the subject matter you described portrayed in a video also occurs in the "String" genre.  The dancers, however, are unique to luk thung, mor lam (the "modern" kind) and kantreum (again, the "modern" version) though.

[thaibeachlovers]

Thanks.

Reading this https://en.wikipedia.org/wiki/Luk_thung you are spot on.