You would find a whole bunch of these ultra jealous, possessive males who can't stand other males within the vicinity of their love interests in Thai dramas.

Radio Romance

"whats wrong with secretary kim?" you'll see what real jealous ML behaves like

"strong woman do bong soon" he  literally craved for  love from FL

Put your head on my shoulder. A cute and refreshing drama. The jealous expressions by male lead were cute.

Innocent man and hotel king

Legends of the Blue Sea (there were a few parts)