Your bowl-him-over move backfired? Smooth things over with these steps.
Apologise ASAP. Own up to your gaffe by saying 'l was so nervous/temporarily brain-dead, l ended up doing something out of character.' Your confession shows that you recognise your doff behaviour. Plus, you may even evoke a little empathy.
Make it up to him by showing your true colours. For example, if you barked his ear off the night before with a long list of personal problems, spend the next couple of dates subtly encouraging him to do most of the talking. Once he sees that you're not a chronic complainer or babbler, he'll realise your faux pas was a one-time occurrence.
Play it cool. Wait a week, then assess where you stand: If your union is back on track, thumbs up. But if he seems iffy about hanging out or won't let your stuff-up go the next few times you talk, you might have to concede defeat and move on.
Don't do it again. He might forgive you your hissy fit once, but twice and you're pushing your luck. Just because he's willing to move on doesn't mean he'll accept a girlfriend who flies off the handle at the slightest provocation.
Make a joke of it. Endlessly referring to the incident will make things awkward for both of you. As much as you crave reassurance, force yourself to make light of it, and don't bring it up again.