Yes, they are. Mei, again, has lost all agency of her own and now needs Yuzu to be a bigger part in her life in order to change it. The test of her character growth is that she was caught continually lying? Looks like she already failed the test, if only they had already dealt with this exact situation a long time ago...
So you have read the next chapters already? Because so far there's nothing at all that supports your reading. Mei was ready to confess this chapters before Matsuri (like the readers) jumped the gun and started to scream bloody murder over speculations from characters that aren't the ones up to date with whatever happens on the Aihara family household.
It's literally a direct parallel since it's the same exact situation. Mei is once again engaged to another arranged fiance without Yuzu's knowledge and requires Yuzu to step in to save her AGAIN.
Yuzu knew form the get go that Mei was engaged to the teacher so your comparison falls apart from the start.
You have got to be joking. Foreshadowing and easter eggs? Come on, please, where was the foreshadowing that Mei somehow got engaged again without anyone knowing? The fact that the mother doesn't say anything just shows that Saburouta is just pulling this out of her ass.
And that is precisely why I'm waiting to see where is Saburota going with all of this. Is not the firs time that people here creates huge narratives without basis. Just last month we had people 100% that Mei was dying
There have been four love triangles: Amemiya, Himeko, Sara, and Matsrui. Now here comes a fifth in the form of another arranged marriage. At this point Citrus can qualify as a harem manga with how many people are trying to get into Mei's panties.
Yuzu and Mei weren't into a relationship, let alone know each other when Amemiya was a factor on the plot and Yuzu step in not because she was in love but because she thought it was the right thing to do.
Himeko and Matsuri are the only ones who have actively try to force their feelings over the crushes. And Sara's confession wasn't a real love triangle since she was fast to step up as soon she was made aware of the situation and her role actually pushed Yuzu and Mei into a relationship.