finding yaoi manga, playboy turned loyal

i don’t really remember much details, but i know one of them (the seme i think) was a player with girls, but he changed bc the uke started avoiding him bc of it. then in the end there was this scene where the uke finds the seme all beaten up and slapped while sitting on the stairs i think, then the seme said he already cut off all the girls he was playing with to be a better person/ boyfriend for the uke and begged the uke to be with him again