Kuzu na Kimi Shika Aisenai

Sae's been going out with the handsome and flirtatious Shun for two months already. He’s selfish and a bit naughty, always teasing her, but before she knew it... she had fallen in love with him...? A blinding love with a stubborn boyfriend!

(Source: Kodansha, translated)

Note: Includes an extra chapter.