Sumeru was at war with the Fatui, the bad news was you were in the Akademiya and he was in the Fatui plus... You've been hiding the fact you're together. He tried to protect you but you were killed brutally. Scaramouche couldn't believe you were dead, he even made a doll of you. Until he can't anymore he made a puppet of you using your heart to function.

"We can finally be together after all those years." he said as he stared at your puppet body.