Atomosexual is a term for greyasexual people who have only felt sexual attraction to one person. Atomosexual people may have trouble figuring out the gender(s) they are attracted to because they only have one experience. Atomosexual is similar to unisexual, however atomosexual makes no assumptions about when or if one will feel sexual attraction again.
The romantic equivalent is atomoromantic.
Flag
The flag was designed by Plurgai, a tumblr user who did not coin the term.[1]