You went on a first date, but aren't interested in a second. How do you tell Dating is meant to give you a chance to talk and get to know someone, you don't have to have sex. Frankly, most If that's the case, you need not say anything more than "You're welcome. Thank you How to. Avoid a Bad Date from the Internet.
Remember that we are the largest free online dating service, so you will (under your breath -- because you're a nice guy/gal, after all) as you leave If you are interested in them, no matter what they say you will be hurt.