During the initial romance stages of a toxic relationship, a person with manipulative tendencies will groom their target. In my March 2022 article, “Love-Bombing, Grooming, and Early Abuse Tactics,” I describe this technique: When you first met him, you were completely sure that he was the one for you. He liked what you liked; he said he was bored with the same things that bored you. He was incredibly attentive, and wanted to spend every waking moment with you. When you had to be apart, he would text (or call) frequently, and leave heart-melting, romantic posts on your social media pages.
This is very helpful and enlightening!