Arospike is a romantic orientation on the aromantic spectrum. It is defined as someone who usually feels no romantic attraction, but occasionally has rare and sudden spikes of romantic attraction for an amount of time that can vary from a day to a couple of months before returning to one's normal amounts of aromanticism. Arospike can be a romantic orientation on its own or can combined with other orientations. For example, one could be arospike and heteroromantic, meaning that when one does experience romantic attraction it's exclusively towards individuals of the "opposite" gender.
The coiner of arospike is unknown, but the most popular flag was designed by cyzu, the alternate flag was designed by tumblr user i-love-my-trans-body, and the second alternate, based on the main flag, was designed by Pride-Flags on DeviantArt on August 17, 2015, along with the fourth alternate. The third alternate was designed by tumblr blog pride-flags-for-us.
[https://web.archive.org/web/https://www.deviantart.com/pride-flags/art/Arospike-4-554424585 Arospike (4) by Pride-Flags on DeviantArt
[https://web.archive.org/web/https://www.deviantart.com/pride-flags/art/Arospike-1-554424597 Arospike (1) by Pride-Flags on DeviantArt
[https://web.archive.org/web/https://www.deviantart.com/pride-flags/art/Arospike-2-554424555 Arospike (2) by Pride-Flags on DeviantArt