You pay me $1000, and I will put you, alongside two other people, through a miserable grind of an experience. One of you will not survive; the other two will form a long-lasting bond.
One step further – all that miserable work can be productive! Match prospective couples/friends with someone who has a grueling job they need completed (e.g. help me move this refrigerator). It's like Tinder x TaskRabbit – couples fulfilling your Instacart order as a first date.