i think he will be mad but he is still in love with taesung tho because he still fall for him even if he lost his memories. taesung is different now, he's more considerative and being gentle with him but i know that's because sooyoung doesnt push him away. im worried if sooyoung remembers and start to push him away again and taesung will be back to his old self because he doesn't wanna lose sooyoung