Relationship development during courtship is a complex phenomenon. This study analyzes factors that influence couples at different relationship statuses, from dating to marriage. Combining stage and process models, the layer theory of relationship development suggests that relationship status can be predicted by layers of relationship/dyadic, individual, and family background characteristics that accumulate as relationships progress. The results show relationship/dyadic factors are the best and earliest predictors of relationship status, while family background factors begin to influence relationships at the serious dating status. No support is found for the influence of individual factors on relationships. With limited support, the layer theory should be tested with more representative data and other factors.