I mean at least this one doesn't create any misunderstandings. He's also pretty honest in front of ML (he told ML he likes FL after he realized it, he openly told the ML he wanted to go on a date with FL if he won, when he brought cakes for FL from her fav store (I think) he also brought one for ML, even near the end he may have hugged FL but it was in front of ML rather than doing it behind his back or anything). That said I do feel he likes teasing ML a lot (like when he sent ML the photo of FL dressed in the clothes SML made).
Honestly if we HAD to have a SML, Yuna isn't that bad. He's not too good that we feel too bad for him that FL didn't choose him but he's not too bad that we just plain hate him.
It's been so long that I forgot that this part of the story is annoying af, shitty sec ml lurking in the shadows waiting for the chance to strike, when some small gap between leads opens, and creating more misunderstandings along the way.