Dyosexual

Disexual (or Dyosexual) is the attraction to exactly two genders. These can be any two genders, whether they be binary or non-binary. It is similar to bisexuality, but disexuality is limited to exactly two genders, whereas bisexuals are attracted to two or more genders.

History
Dyosexual was coined by mod Dawn on the Tumblr blog neolabels on December 22, 2018. Disexual was coined on the LGBTA wiki discord server by Choo Choo Mf/HakuoTan on June 28, 2020.

Etymology
"Di" originates from the Greek word, "Dis", which means "two".