The reliability of love test relationship quizzes depends on the source. Quizzes and tests based on psychological research are more likely to be reliable, although not even those are not always reliable and accurate. The Myers Briggs Foundation suggests that retesting helps identify how accurate the test actually is.
As there is no definitive standard for these types of quizzes, it may be difficult to determine how valid the results are. Quizzes and tests developed using widely recognized psychological personality testing such as the Myers-Briggs Type Indicator, or MBTI, test may prove more reliable than quizzes developed based on the creator's opinion of what is important in a relationship may be more likely to produce reliable results. However, even well-known psychological personality tests are still somewhat controversial.