Help finding bl manga pls

BL manga where it was based off a couple, the uke was a very serious person in high school and the seme would do people in a certain room. Uke had asked the seme to do it and ig he imagined his senpai while doing it. It had made the seme fall in love with him. Later on they were on the edge of falling out since they barely even touched each other. After a while, they solved their problems however a very serious guy came into the seme workplace and fell in love with him due to the seme being able to understand him with his serious expressions. Seme is like this due to the uke serious expressions. The seme got drunk and the dude try to take him into a love hotel but the seme defended himself and ran. Idk what happened afterwards but it was similar to 1095 days of flowers