Looking for suggestions for romance manga where the boy falls in love first. It would also be preferable if the boy is upper class (son of a distinguished family, company head, etc) and falls for a girl who is poor. Even better if the boy has black hair (I'm a sucker for dark haired males in manga).
They can be kids or adults, no preference there.

Currently taking a break from the anime bc it was pissing me off

The Prince's Cactus
Sakamichi no Apollon
Akagami no Shirayukihime
Toukyou Lastochika
Ibara no Okite
Emma
Lady Mitsuko
Kuragehime
Chikutaku Bonbon
Cheese in the Trap
Cherry Boy, That Girl

Some of the above have them falling in love at the same time. (I can't remember which)

And some with a dark haired male who falls in love first (they don't have the rich/poor dynamic):
Love So Life
Koi da no Ai da no
Orange Marmalade
Sekine-kun no Koi

You can do a genre search using the category tags Male Lead Falls in Love First and Rich Male Lead.

For a short, sweet one I recommend Sakura Rhythm.

Last Game - One of the best shoujos.

It's focus is more comedy/parody, but you can try Ouji ga Watashi wo Akiramenai!
It's a fun read.

Mangas with dark-haired-rich-male-leads who fall in love first:

Coffee & Vanilla
Getsuyoubi Kara Kataomoi
Ou-sama no Ura Shigoto
Hana ni Arashi (TAKAGI Shigeyoshi)
Sabaku no Harem
Tsukumo-kun no Ai wa Machigatte Iru
Sakamichi no Apollon
Takane to Hana
Tokyo Kareshi
Haru no Noroi

Not dark haired male leads:

Kaichou wa Maid-sama!
ReRe Hello
Ouran Koukou Host Bu
Last Game

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Private prince only come to my mind