I for one am really liking the manga - I'm realising that the title here is very, very literal.
So yes, their logic is virtually nonsensical. All the characters here are messing with themes that seem stupid in comparison. Welcome to puberty, people. I actually enjoy how these kids are trying to deal with these problems in ways that pubescent people would - with anger (male MC), blind optimism (female MC), and jealously (crush subject). This manga really is meant, literally, "for imperfect people".