Amantesexual is a subtype of demisexual in which one only feels sexual attraction towards individuals one is in love with. One does not feel sexual attraction until they're in love with someone. Being in love with someone does not necessarily have to be romantic.
The term was coined by Tumblr user polymorphic-cryptid to describe his sexuality. On May 9th, 2018, the term was showcased on Tumblr by user beyond-mogai-pride-flags.
The flag was attached to the beyond-mogai-pride-flags post, and was also made by polymorphic-cryptid on Tumblr.
According to the coiner, "Amante" is a combination of "am" meaning love, and "ante" meaning before. However, Amante is also the spanish word for "lover".