Please help, finding the name for this manga has been driving me crazy

Yaoi, really short and completed, probably under 10 chapters. One guy is a celebrity and the other pretended not to recognize him at first. They meet when celeb guy is feeding a cat (dog?) near his apartment complex, other guy sees him, he pretends not to recognize him, celeb guy gets funny annoyed (and astounded) in the elevator, they get talking then have sex. Later it’s revealed that the guy was only pretending not to recognize celebrity guy and was actually a super fan. I think actor guy also might have been a child actor too? And they both had brownish hair (celeb guy might have been red-ish)? Not too sure on those points though. Please if you know the name of this darn thing let me know :’u