I would say, if you must contact him zip off a friendly email letting him know you are thinking about him and that you've had a busy productive week. Keep it light and positive in tone and don't let it sound like you are chasing him...just be matter of fact, rather chatty cathy....ask how his week is going or say that you hope his week is going well...and then do not end with i love you...just end it...with your name...and take care or something like that.
