Well . I'm kinda sick of those shoujos where the boy/girl falls in love at first sight with someone they just met. I just finished Beauty Pop and I really liked it. The romance develops slowly which is what I'm looking for :]

{(It would be nice too if the heroine is not one of those crazy fan girls. Also its better if the boy is kinda shy like Narumi in Beauty Pop)} 😀

Try Shiawase Kissa Sanchoume.

Look through these too:
Slow-Developing Romance
A romance that develops...

Looking for... shoujo with a canned peach confession. Don’t English me I’m panic.

Cat Street
Full Moon wo Sagashite
H3 School
Hana yori Dango
Kimi wa Girlfriend
Midnight Secretary
Peach Girl
Power!!
Saboten no Himitsu
Tenshi ja Nai!!
Wasurene no Language
Asa mo, Hiru mo, Yoru mo.-- in a way..
Beast Master
Mars