I’m looking for a yaoi where the mc looks scary but he’s not and is actually a shy guy...

I’m looking for a yaoi where the mc looks scary but he’s not and is actually a shy guy, and he is befriended by a popular rich dude and he’s so happy but it doesn’t go well and the rich dude was just using him. The rich dude gets attacked and loses his memories and is now a completely different person. They spend time together and try to avoid suspicion as well as the rich dudes crazy brother. They fall for each other. Rich dude gets his memory back and acts mean to the mc but it’s all an act and he’s still in love, it ends with them happily together and the brother gone from their lives