Host Manga

I'm searching for a yaoi manga. I'm not sure if it's uploaded here so since I saw it elsewhere.

It's about a highschool boy (uke) who has a relationship wirh a host (seme). The host works in the club of the ukes father and if I remember correctly he even lives with them. The uke gets a new schoolmate who tries to get close to him. But it turns out, that he only wants to hurt the seme by snatching the uke away, because his sister got depressive after she got rejected by the seme.