A 4koma manga

Platonic relationships are becoming rare today. This is a collection of "Flower Comics" love stories written by seven writers.
1) Secret Housemate (Naisho No Doukyonin) by SHIMAKI Ako
Sweet short story of a middle school boy in love with a high school girl. She is meticulous about wanting to know everything about the person she is dating. Her emotion conflict when she meets this middle school boy, who challenges her way of thinking about relationship. The author diligently places the character in a muddled, flustered, and distraught air of insecure emotions. She feels baffled because she can't comprehend why she likes him, even though she knows nothing about him.
(Also published in Iinazuke Ryokan)
(from M-U)

1. Houkago Wedding (After School Wedding) by SHINJO Mayu
Hana is a jealous wife, and Ryuki is her hot-shot-model husband. The thing is, he's also her teacher at her high school!! Both struggle to manage their love and life while keeping their relationship a secret from the rest of the school.

2. Platinum Talk by ENOMOTO Tsubaki

3. Close Distance Love by YAMADA Komomo

4. Until I Fall in Love by YUMACHI Shin

5. In Love for 10 Years by OSAKABE Mashin

From Baka-Updates:
An anthology of short stories:
1) Hurt me Gracefully (Shinayaka ni Kizutsuite) by KITAGAWA Miyuki : this is the first chapter of Shinayaka ni Kizutsuite.
2) Devil Cat's Temptation by NAKAHARA Migiwa.
4) Takaya-kun of House Tanaka by SHIMAKI Ako.
6) Story of a Long, Long Night by YOSHINAGA Noriko.