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Reminder that Ame has a much easier time acting lovey-dovey with girls who she doesn't actually have real feelings for cause it's just for fun.
Whereas if she actually has feelings, it becomes weird and she's nervous and doesn't want to fuck anything up by acting strange or saying the wrong thing. Like with Gura.
Same thing other way around actually. Gura has a much easier time acting like that with Marine, Shion and such.