Telling anyone no is a tough thing to do. Nobody likes to hurt anyone's feelings after all! But at this point in the dating process, you really don't owe anyone anything other than politeness and your "rejection" should take that into consideration. A simple e-mail or text message stating, "I enjoyed getting to know you (yesterday/this evening/etc) but I don't think we're a good match. Thank you so much for your time!" You can elaborate a little more if you like, ie - we're not compatible, we live too far apart, etc but it doesn't need to be a long, drawn out affair.

Age - 35
Divorce Final - 3/5/12

S - 13
S - 10
D - 8