How to politely refuse to send SMS after blind date?

You are a very good young man, mature and steady, but I have no feelings for you. Although feelings can't be eaten, if two people have no feelings together, they will not be happy if they are barely together. I don't want to hurt you, and I don't want to delay your later life, so these words must be said as soon as possible. I am a straightforward person, so please forgive me. I hope you can find a better girl than me in the future. I wish you happiness!