 If you liked
Tonari no Kashiwagi-san
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 ...then you might like
Hadi Girl
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Both female main characters don't fully understand their feelings and can't talk to other people very easily. Both male main characters express that they love the other (at least evident to the reader) early on. Both stories is the motion of the girls realising their feelings and trying to understand them.
Would definitely recommend this as this was the manga I read to fill my craving for something similar in story. The main difference is that the majority of Hadi Girl is talk from a girl's perspective instead of a guy's like Tonari no Kashiwagi-san was.