pls HELP

Can someone help me find this yaoi manga? The top has unrequited love for his straight best friend, so to forget him he sleeps with a guy who works as a prostitute? (I’m not sure if he’s actually a prostitute or just acting like one so the top will sleep with him). It turns out the bottom has also had unrequited love for the top for a long time. Later, bottom pretends to have lost his memory and starts behaving like the top’s best friend.