Help me find this short story threesome yaoi with seme going to some country side for work...

Help me find this short story threesome yaoi with seme going to some country side for work related reason and like met this uke and uke invited him to his house except like uke and his ex bf are living on the same house but they are still banging for some reason, yeah it ends up in threesome and I guess semes bickering but the other seme is kinda flirting, I'm not sure if it's part of bl anthology or no