Mutusexual is when one finds attraction to someone with the same sexuality as them. An example would be bisexuals or who are only attracted to other bisexuals, etc. This could be due to the desire to date someone of the same or similar experiences as you, so you may relate or bond over it.
History
The term mutusexual (formerly gaysexual) was used as a troll term originally, but has since been reclaimed by user Cryptocrew.
Flag
The flag was made by a user going by Ally on October 30th, 2020. The shades of pink and purple represent relationships, while the shades of grey and white represent relating sexualities.