How Do I Get My Roommate to Come Home With Me?

[Two male leads, older man, age gap, short story, cheerful and skilled air-conditioner installer VS extremely socially anxious novelist] The first time he met Yin Chengyi, Bai Yu thought he was a rather dim-witted oddball. He was bundled up from head to toe and dragging several huge suitcases, yet didn’t think to stop the elevator door with his foot before pushing them inside. But Bai Yu was kind, so he helped him get the suitcases in. He didn’t even get a thank-you. What a rude, dim-witted oddball. Then, when he got home that night, he ran into the rude, dim-witted oddball again. Oh, so this was his new roommate. Later, Bai Yu only felt sorry for him. The oddball wasn’t odd at all. He was sweet and kind. He wasn’t rude. He was just too timid.