Could let users pick what type of relationship they're looking for: "forever-marriage", "summer fling", etc. For long-term marriage you could find couples to tr

Could let users pick what type of relationship they're looking for: "forever-marriage", "summer fling", etc. For long-term marriage you could find couples to train a model for true positives. For the others you'd have to find couples who self-identify. Then determine not just "distance" but "vector"/"clustering" and identify which cluster combinations seem to be compatible for different types of relationships. This would also entrench present-day dating and marriage regimes. Then you could handle the physical attractiveness the same way Tinder does. Use the clustering model to pre-filter candidates, and present the user with photos for final thumbsup/down.