Please help me

I'm looking for a yaoi manga in a office setting. I only read the first two chapter and my memory of this is kinda vague so please bear with me. The uke is light haired and the seme is black haired. Uke and seme kinda hate each other, maybe because of a misunderstanding and they always quarrel. Uke finds someone for a one night stand on a dating app and it turned out to be the seme, they both didnt know the other was gay, anyways they do the deed. It was then mentioned that they were both in love with each other, or maybe it was one sided, i dont remember exactly, but they keep being fwb and then after that...................... I dont know what happened （/TДT)/