How long should you date someone before you know it's not going to work?

Oh no girl. The thing that your obviously not feeling is chemistry. The good thing about chemistry, is that you don't have to think it over, you know its there with out thinking about it. There was obviously no chemistry from you. You should have butterflies, and be excited about seeing him, not feel it's a chore. Don't waste your time, or his. The spark wasn'tt there. To not hurt his feelings, maybe say, you had a nice time the other night, but honestly dont't think there was a strong connection between you guys. Ive heard of a spark igniting after a couple of dates rather than the first... but never with one person explaining it as a chore. Ive been there. It sux. You don't want to hurt such a nice guy. But there's someone out there that you WILL feel the spark with, and someone out there that will feel the spark with him.