reciprosexual 

Sexuality in which you feel attracted to another person after knowing they are attracted to you

Hey, Mike said he likes me and I'm starting to think I might be reciprosexual.

reciprosexual by Melmelimelmelmel April 3, 2018

recipsexual

A recipsexual/recipromantic is a person who will only feel sexual or romantic attraction to someone once they find out the other person likes them.

Jenny told the recipsexual that they like her, and only after that did the recipsexual find out that they liked Jenny back.

recipsexual by strongintherealway November 7, 2015