An ex-Tinder exec just raised $10M to build a dating app where the main users don't date. Complete strangers browse profiles, pair people up, and get paid when their picks turn into something real. She spent almost a decade at Tinder, so she knows the problem better than anyone. A dating app loses a customer every time it succeeds. The match that makes two people happy deletes them both. No other business is built to fire its best customers. The numbers show what a decade of that does. Match…