My recommendation (which is just about the same for most situations) is to just be yourself. You sound like a normal, friendly girl with a sensitive side. I don't think that you've done anything wrong so, if you're comfortable continuing to be friendly with him, then do so...but try to feel more at ease with the fact that you've done nothing wrong. If you feel more relaxed, then I bet he will feel relaxed too. This should work out for either situation (i.e., whether he likes you or is annoyed by the attention that you give him). Not everyone communicates in the same way or communicates with different people in the same way (different combinations just have different energy)...just take a deep breath, smile and be yourself.