Can please anyone tell me this manga, I don't know if its just a random chapter from a man...

Can please anyone tell me this manga, I don't know if its just a random chapter from a manga but its about a couple, The one has a short hair and wears glasses and the uke has a medium blonde hair, they live next to each other and the uke always looks at the seme by the window, the seme is always studying i think? And one day, I think the uke saw the seme with a girl and then he goes to his house and complained to him about it then the seme got angry and pulled his hair, then the seme felt sorry and hugged him??