crush

hi, last night I drank too much (alcohol isn't so beautifull thing) and I texted a boy that I crush for over 8y, I just needed that to close some kind of chapter of my life. i ask him if he want to go out. I was ready to hear "no, but thanks fo interesting " or something like that. but he actually said yes. I don't have enough confidence to go out with him, whole meeting I goping to be disaster. can someone calm me down? please