First off – congrats to you for finding someone you are comfortable with.

I would offer couple advices here :
  1. Sounds like you never met this person in real life before – physically. It would be good to organize first meeting without planning a session. To actually be able to sit and talk to Him in public place (find some really quiet public place where you can be relaxed and talk uninterrupted – hotel bars / lounges are usually mostly empty and quiet)
  2. When you do plan for a scene – set fixed time for the phone check-up like every 2 or 3 hours. Even if you are still in the scene – have him dial and just tell her “I’m fine, talk later.” Set with her the code that will tell her you are not OK without him knowing about it, like “Girl! I’m having a blast!” (that is really paranoid measure of precaution, but all will tell you better safe than sorry)

Than, relax and enjoy – and trust your gut! If it does not feel right – it most likely is not right!