Do you guys really think that nobody has premarital sex in places like Pakistan? All that surfaces in the media are stories of some poor raped woman getting tried for adultery (usually in a Gulf Arab country, not Pakistan), or stories of honor killings. Those are real problems for sure, and the cultures of most Muslim countries have devolved during the past century in many ways, but a catalog of dramatic headlines doesn't capture what actually goes on in these countries and how people actually live.
I would expect the jump from "Muslim dating site" to "honor killings and stoning" from the comments section of a common newspaper, not Hacker News.