Any rom where the ML Is totally OP but pretends he's a shrimp or stays low key because of his overbearing confidence, meanwhile there are SMLs who thinks they're at the same level or the audience/viewers thinks are at the same level, but a simple flick of the ML's fingers could waste them away. 

I'm talking about a ML who would never be jealous because he's too confident in himself and even if the FL ends up in ambiguous situations he doesn't doubt at all.