Meeting my Thai girlfriend makes me nervous.

I have a Thai girlfriend whom I've met in an international dating blog site. We actually haven't met personally yet. We just do chats and video calling for four months. I am very attracted to this Thai lady. I cannot stand talking with her just over the phone. So, I am planning to visit Thailand to see her and I'm really nervous. What should I do when I see her before me? How should I act? Advice, please.