Help me PLEASE!

I remember this yaoi manga that I really want to re-read but dont know the damn name of it, so I'm just going to leave a description and pray that someone knows it. The uke of this manga was slim thicc not muscular thic and the seme was the average "straight guy". When they met I think that they were in a hot spring the seme was there and touched the uke booty. Another part of the manga that I remember is that they were locked inside of a room by there friend's because they were fighting and I dont think that their friends knew they were gay for eachother. When locked inside the room the uke tried to jump out the window because he was shocked but the seme brought him back to reality and they did the dirty lmao. SO IF ANYONE KNOWS WHAT THE NAME OF THIS MAGA COULD BE PLEASE TELL ME. (︶︿︶)＝凸