Fidelis Attraction, also called Certus attraction, is similar to the phrases "you are my one and only" and "only you, no one else." The individual with this attraction would feel a deep sense of loyalty to someone, or a few if it's a polyamorous relationship, and would feel that the individual(s) they are attracted to is the only one(s).
This term is closely similar to Ductuaffectian Attraction but does not directly include a pet-to-owner type of attraction, however it can be used in place of the term.
Etymology
"Fidelis" and "certus" both mean "loyal" in Latin.
History
Fidelus/certus attraction was coined by Nyxien from the wiki's server on June 5th, 2022. View the coining message here.