Specifically, the word you’re looking for is ephebophilia.
For clarity, pedophilia refers to sexual attraction of prepubescent children. As well as being illegal, it is considered a psychiatric illness.
Ephebophilia refers to the sexual attraction and preference for late stage pubescence. In other words, children who have began but not completed the process of maturity both physically, mentally, and emotionally. It is not considered by most to be a psychiatric disease but it is every bit as illegal as pedophilia because it is an act of predation. A teenager cannot consent to sex because they have not reached the age of majority. They are not developed enough to be on equal footing with a mature adult. Coercion, manipulation, isolation, and control are aspects of the “courting process” which means that the “relationship” is fraudulent.
Think about it, if your dating mechanisms require grooming, you know you’re wrong. Come on.
If the same dynamics are applied to money, we call it grifting, swindling, Ponzi schemes fraud, extortion, etc. We recognize the people who lost were victims of a crime because they were lied to and manipulated out of something of value in their possession.