I am really scared to meet this guy? Please help?!!?

Today my friend wanted me to text her ex-boyfriend saying hi and that i have been watching him and that i liked him (I have never met that boy in my whole life!) But I did anyway to see how he would react. He texed back and was super nice and sweet, and we talked all day. He told me he wants to meet me tomorrow and I am really nervous. What should I do?