I have one really GOOD tip. Get rid of the e-mail jargon. I believe that it should only be used as a LAST RESORT. If you want an immediate answer, talk to him in person. Show him you are taking the time out of your day to see him. Show him that he is more important then an e-mail.
Also, on the internet, e-mail or chat is VERY impersonal. More then half of communication between people is through body-language, so I truly believe you two should try and get rid of this relationship-through-the-internet-thing.
"I still find each day too short for all the thoughts I want to think, all the walks I want to take, all the books I want to read, and all the friends I want to see."
- John Burroughs