looking for a manhwa where the main character's job involves testing the fidelity of people's partners. She eventually meets a man at a bar, initially mistaking him for her target, and they start dating. There's also a subplot involving her boyfriend's friends, one of whom is an author, and another is cheating on his wife within their friend group.
If I remember in the beginning this highschool boy works for an organization that defeats aliens. And there is another boy that got on a train and got taken by an alien grandma. I remember the boy that got kidnap did also find out his dead dad worked for the alien organization that the other boy works at.
should be this?
http://www.mangago.me/read-manga/tokyo_aliens/

Looking for a yaoi i remember the uke being in a toxic relationship. He meets the ml and they get together. They break up but reunited later on after some healing.