BlueBell

Can anyone tell me which manga this is. Ive read it way before that i mostly forgot the story. But what i remember the most is that the MCs had a huge fight (cant recall what it was about) and one of them called for a break up (i think. Not 100% sure). And the other one was like too bewildered or like gave up at fighting with him that he just turned to leave. Seeing his reaction, the one who asked for a break up got scared they might really do break up latched on the other. They didnt say a word and the other one just walked with the one who asked for a break up following him while holding onto the other's sleeve crying.

Can i ask which manga where two high school students kinda hated each other at first. One is the president of the sports department i think and the other is the academics department?? Or like the school president. And like they hate each others guts because they are complete opposites. Then one day, they were in a compromising situatiin where the school president gave the other one a blow job. After that they kinda continued going further. The school president acted like he knew sex between two guys but he was actually also clueless like the other one. Does anybody know this manga??