Help me find this BL

I read this two years ago but I can't find it anymore. Basically, the lover of MC died and the ghost of his lover has been hunting him. It's really detrimental to the MC. (There are also sexual assaults) So, he went online and talked to a random stranger about that. That stranger promised the MC that he would come and meet him, and they both would work together to catch the ghost. Ml(stranger) turned out to be a rich and handsome dude. Then, things just happened and what I remember last is MC is living in Ml's house. The ghost is also not likely to be his deceased lover but a student from his previous school. It's a Manhwa.