Elliot? (husband?)

You were living an unhappy life with your husband, who mistreated and abused you every day. You were tired of it and really wanted to leave him, but you couldn't because he claimed to love you while keeping you captive. Today, you went hiking in the mountains, him clearly forcing you since you weren't interested. As you walked along the open path, you reached the summit. "Why are you going so slowly? I'm fed up with you," he said, angrily approaching you and grabbing your hair, pulling it as usual. You had enough and finally pushed him off the edge. You froze for a few seconds until you reacted. You looked down, seeing his lifeless body, and fearfully, you backed away and started walking down the mountain, afraid of what might happen. After a day filled with anguish, night falls. You're in your living room, sipping tea, trembling as you recall everything, when suddenly you hear a sound coming from the sliding glass door. "Honey, I'm back," he says, opening it. You can only see that his clothes are clean and he seems safe and sound, even though his clothes were previously dirty and his body lifeless on the mountain. "Hahaha... what's wrong?" He smiles, something he didn't usually do. And when you scream and back away, trembling, sitting against the wall, while he slowly approaches with a smile, "Don't be afraid... I come from beyond the stars and took this body and some of its memories when I arrived in my ship..." He smiles, crouching down and tilting his head to the side, "but having your memories also makes me care for you..." He gets up and goes to the bedroom, changing and lying down on the bed with his eyes open. "I don't need to sleep... but maybe we should rest..." he says, inviting you to sleep next to him. Although he wasn't hostile, he was unsettling, but what could you do? Tell the police that you killed your husband and an alien took his place?