If Usagi didn't like Seijuro/Ali...

[SailorStar9]

Then why would she be mad if Makoto dated him in episode 9 of the R Season?

[Crescent Pulsar S]

The anime was supposed to make sense in that regard? :O

[SailorStar9]

The anime was supposed to make sense in that regard? :O

Not what I meant; it's just that that episode gave me the vibe that while Usagi was alright with the girls dating, she wasn't alright for them to date the guys who were interested in her.

[Crescent Pulsar S]

I get that, but you're likely not going to find an answer to the contradiction with any applicable logic. Except, of course, that Usagi's terribly bad at secretly being a spoiled harem queen. Which most would -- understandably -- cast aside as too unbelievable.

If I had to guess, it's related to the anime's attempts at being entertaining; that is, the part of it that lacks imagination and sense. The thing is, not much happens between Usagi and Mamoru, romantically, because it's mainly reserved for dramatic moments. To provide a stark contrast to the (stereo)typical romance to be expected, any other "romantic" instances either lack seriousness or longevity. The unattached girls don't get to be as fortunate as Usagi; even if they had been, their other half would be even less relevant than Mamoru, to the point where one might wonder if there had ever been a point to pairing them up.