Con Artist/Grifter
A con artist is someone who tricks or defrauds people to get something of value from them. (Bing search)
Gaslighting
Per Psychology Today, gaslighting is part of love bombing. “Gaslighting is an insidious form of manipulation and psychology control. Victims are deliberately and systematically fed false information that leads them to question what they know to be true, often about themselves. They may end up doubting their memory, their perception, and even their sanity.” Further, the article states “manipulative people who engage in gaslighting do so to attain power over their victims, either because they simply derive warped enjoyment from the act or because they wish to emotionally, physically or financially control their victim.”
Love Bombing
Psychology Today states “Love bombing is considered a deliberate and manipulative tactic that is deployed in order to gain the upper hand over a new partner and increase his or her dependence on the bomber.” They further indicate this tactic is “often attributed to individuals who are high in narcissism or other antisocial traits or those who engage in domestic violence.” The bomber showers the other person with affection, gifts, compliments, declaring love or strong feelings and/or connection early on, spending increasing amounts of time together, and taking steps to remain in constant contact (i.e. texting or calling).
Refer to the link for more information regarding love bombing, including the signs and stages. It’s worth the read!
Mark
The “mark” is a term con artists use to specify their chosen victim or target. (Bing search)
Narcissism (Narcissist)
“Narcissism is characterized by a grandiose sense of self-importance, a lack of empathy for others, a need for excessive admiration, and the belief that one is unique and deserving of special treatment.”
Regarding narcissism in relationships the article expounds further, “Narcissists may show passion and charm in the early stages of dating. But for most narcissists, relationships are transactional. They provide positive attention and sexual satisfaction to bolster a narcissist’s ego and self-esteem. The objective is to enjoy uncommitted pleasure, and most narcissists lose interest in the relationship as the expectation for intimacy increases or they feel that they’ve conquered the challenge of securing a relationship.”
Keep in mind intimacy can mean physicial (holding hands, cuddling), emotional availability, sexual contact, psychological, etc.