Bitou Lollipop maybe

You said anything right? For shoujo I second Mademoiselle Butterfly.

BL:
Hana no Mizo Shiru
Elektel Delusion
Himegoto Asobi

You probably read some of these already but going to list them down anyway, just in case. Below are examples of great romance development with both leads deserving of each other, I mean they both make sense, you know, their coming together. They all have their quirks but the romance is believable and not tiring.

Ao Haru Ride
Beast Master
Bonnouji
Chihayafuru
Colorful Pallet
Hatsukare
Heart o Uchinomese!
Hibi Chouchou
Kuragehime
Last Game
Nanaco Robin
Oboreru Knife
Oishii Kankei
Orange (TAKANO Ichigo)
Orange Marmalade
Otomen
Sakamichi no Apollon
Principal
Tonari no Kaibutsu-kun
Matsuri Special
Gokinjo Monogatari
Kabocha to Mayonnaise
Happy Every Day
Koi (Matsumoto Tomo)
Matryoshka
Otokomae! Beads Kurabu
Sprout
Suki Kirai Suki
Sukima Shiki
Kimi no Kachi
Tenshi Nanka ja Nai
Toukyou Marble Chocolate
Wisteria-Colored Sky Apartment
Haruyuki Bus
Love Catalog

for authors check out,

Ikuemi Ryou
Iketani Rikako
Nanba Atsuko
Usami Maki
Ando Yuki
George Asakura
Higashimura Akiko
Ashihara Hinako
Sakisaka Io

Atm, these are all I have. There are lots of mangas out there fit for what you're looking for, I'll try adding to this thread when I remember or encounter more.

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I also go by amatsu.

Wow, that's an impressive list. I don't usually read romances, because I hate the way they are characterized, because usually the girl is a spaz and the guy is all perfect and they love each other unconditionally, whf? I hate those types of romance, so thanks for making a thread like this, I think I might check out some of the stories people have recommended to you.

I've left out a lot of manga in the list I provided above. You could check out my reading list for more, since I mostly read normal romances anyway. Be warned, some of my ratings and comments are outdated and that I might feel different now to the titles that I have loved years ago. I'm currently working on organizing and updating my lists so I could help people who are in need of shoujo/josei recommendations better.

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I also go by amatsu.

Thank you so much everyone. I'm looking forward to tonight when I'll have the time to read all of these<3

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It wasn't a phase, mom.