Should I say 'hi' to this guy online or leave it to him? See the story?

We met in a dating site a few days ago and he contacted me so we've chatted for about an hour each day. Usually he contacts me during his office hours as he logs off at night. One night he also contacted me. Anyhow, he wants to meet for a walk and dinner at the weekend. I said, sure as he seems nice, is cute and also gentlemanly. I told him I don't want to rush anything and we will see how it goes when we meet. He said, sure that he thinks it will go well. He can't understand why I'm not with someone (from my photos). I said I had been until recently & it is the same with him. Anyhow 2 days ago we were chatting, he didn't get back to me at the end of the chat but then went offline without saying bye. So yesterday I said 'hi' online & asked why he hadn't got back to me last night. He said it was because I wasn't online when he was logging off. Anyhow, he calls me 'beauty' and lovely, even yesterday. I told him to mail me about meeting up as I think it is better not to chat too much first of all but to meet & see how we get on. So he said he would! He said he couldn't chat yesterday as he's v busy in work. I just saw him online a little while ago for an hour or so in the dating site. He hasn't said hi, nor emailed me. We're supposed to meet on Sunday. Do you think I should say hi or just leave it? Is he interested?