Somniosexual is a term for when someone only feels attraction while dreaming, or attraction only to people in dreams. It is a similar term to somnisexual, and may fall under the somnisexual umbrella, but it is specific to ace-spec individuals and is an ace-spec identity.
The romantic counterpart to somniosexual is somnioromantic.
History
Somnioromantic was coined by an unknown user sometime before February 5th, 2017.[1]
Flag
The flag was designed on February 5th, 2017, by Tumblr account beyond-mogai-pride-flags.[2] The flag is colored purple because the colors lavender and purple are associated with dreams.[1][3]