Being More than a Lover to You, Who Isn't My Girlfriend, is a Manga/Manhwa/Manhua in english language, Comedy series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

Having to deal with his abusive boss day after day while working an exploitative job, Yamase Fuyu has become tired of it all… Until one day he accidentally runs into Kei, his ex-girlfriend from university. The sudden reunion lifts Fuyu’s spirits, who wastes no time inviting Kei to chat over drinks. The two have a whale of a time sharing gripes and reminiscing about the past. But just as Fuyu begins to appreciate their new relationship as “just friends,” they end up spending an intimate night together…