This is in the spirit of the What is a Word™/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.
If a word conforms to a special rule, I call it an Infatuated Word™.
Use the following examples below to find the rule:
$$\begin{array}{|c|c|}\hline \bbox[yellow]{\textbf{Infatuated Words }^™}& \bbox[yellow]{\textbf{Not Infatuated Words }^™}\\ \hline \text{ RANDOM }&\text{ ARBITRARY }\\ \hline \text{ SQUEAK }&\text{ SCREECH }\\ \hline \text{ VOLUME }&\text{ QUANTITY }\\ \hline \text{ DECIBEL }&\text{ KILOGRAM }\\ \hline \text{ FORMULA }&\text{ METHOD }\\ \hline \text{ LUNATIC }&\text{ PSYCHOPATH }\\ \hline \text{ VESTIGE }&\text{ REMNANT }\\ \hline \text{ ICEFIELD }&\text{ GLACIER }\\ \hline \text{ RECKLESS }&\text{ AUDACIOUS }\\ \hline \text{ UNOPENED }&\text{ CLOSED }\\ \hline \text{ EMBEZZLERS }&\text{ PICKPOCKETS }\\ \hline \text{ GODFATHERS }&\text{ PATRONS }\\ \hline \end{array}$$
And, if you want to analyse, here is a CSV version:
Infatuated Words™,Not Infatuated Words™
RANDOM,ARBITRARY
SQUEAK,SCREECH
VOLUME,QUANTITY
DECIBEL,KILOGRAM
FORMULA,METHOD
LUNATIC,PSYCHOPATH
VESTIGE,REMNANT
ICEFIELD,GLACIER
RECKLESS,AUDACIOUS
UNOPENED,CLOSED
EMBEZZLERS,PICKPOCKETS
GODFATHERS,PATRONS