You don't. You go to the date (in a public place, set by the app) and if there's something fishy about them you can report them to the app (there's an explicit feedback request after each date).

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harimau777 5 hours ago | parent [-]

If you have to pay per match, then aren't you already out the money at that point? Not to mention the risk of just getting murdered.

	▲	throw310822 5 hours ago \| parent [-]
		Ooh, you lost $12! And your date did too, and probably the account as well. As for the risk of getting murdered, I think it's unavoidable in any app (and in life in general) but probably worse if you organise the date by yourself.