I do the same thing! So don't be embarrassed because your perception of what took place is probably so different than his. He probably just thinks you're really friendly. Try not to be so hard on yourself for this behavior either. Trust me, this is something I have slowly been trying to change about myself ever since I was a little girl. I feel like its hard to change because its a natural overcompensation for people with social anxiety. But seriously, he probably thinks nothing of it. So no worries!