Tough love is defined as being strict discipline or imposing specific obligations or requirements on a person to mandate responsibility because you care for that individual.
An example of tough love is when a parent punishes a child for getting bad grades or for not keeping his promises.
a disciplinary technique, as for a young person, in which a seemingly harsh or unfeeling course of action is chosen deliberately over one demonstrating the tenderness or forbearance instinctively felt
Origin of tough love; from TOUGHLOVE, a trademark for a program offering family counseling
The use of strict disciplinary measures and limitations on freedoms or privileges, as by a parent or guardian, as a means of fostering responsibility and expressing care or concern.