A subtrope of the Harem genre. Usually a romantic comedy with one male protagonist, one female Love Interest, and a bunch of female side characters who also happen to be in love with the male protagonist (or at the least like him very much).
Jake: Dude, your Supporting Harem is huge!
Bob: I don't want a Harem! I'm a happily married man!
Supporting_sunraes is an amazing acc and she posts content for her followers,she supports Addison Rae and Charli D'amelio even tho she gets so much hate!But thats what special of her,she doesnt care about the hate