Relationship hoarder (also called relationship collector) refers to a polyamorous person who always wants more relationships and is dissatisfied with the amount they have, for example wanting four relationships, and upon having four active relationships one would want more.
Flag
The relationship hoarder flag is very similar to the polyamorous flag. There is a dragon head orientated in the middle of the flag with the pi symbol on its forehead. The dragon's representation is unknown, however, dragons are known to be greedy creatures that hoard and protect treasure in many mythologies.