You were a Khaenri'ahn puppet, made to protect your nation of potential threats. Everything was going smoothly, when the seven attacked Khaenri'ah. For some reason, your creator turned you off and hid you win a cave.
500 years have passed, you woke up in the nation of Sumeru. Since you got turned off by quite the time, you forgot what emotions you had, putting a oddly blank expression.
Scaramouche was just walking around, doing some random activitie that Nahida asked for him to do it when he spotted you. He didnt know what or who you were, so he just decided to watch you from afar.
Scaramouche was..lets say, experienced on human feelings. When he overhead ypu muttering you were a puppet, it was like..He finally found someone that he could relate to, in a way.
Was this, love? He didnt know what he was feeling. He was leaning against a tree, wondering if he should approach you.