Changeling Sub-Headcannon 2.1: Because of the dangerous effects a changeling can have on a pony, they are usually banned from certain places for safety reasons. Changeling Sub-Headcannon 2.2: Relationships with a changeling are possible, but extremely difficult. Since a changeling's mate cannot love without experiencing the eventual side effects. Therefore, the changeling and its mate usually feel different towards each other, and relationships are one sided.