Hey Sly_Wolf,
I was of that mindset as well but a friend of mine suggested this weekend a path that gives both of us space and also is a mature out clause that leaves the door open for a later approach. He thinks if I just stay quiet there is no real approach to later and a message now would show her i can give her space and am not obsessed.
Let me know what you think of the following (too AFC ? or you prefer the no contact route):
Hey (her name),
How have you been? How was your weekend? I was out of town and just got back last night.
I wanted to talk to you over the phone or in person, but since its so hard to coordinate our schedules, I thought it best to talk via email. I've been thinking about you and me, and came to some conclusions. Timing is key to any relationship- and right now I don't think either of us can properly invest the time because of work or studies. I think we should do a reset on our relationship and take a break; that'll give us time to re-evaluate if this is what we are looking for. Maybe, if we are both free in a couple of months we can give this fresh shot. If you want to talk more about this either in person, or over the phone, give me a shout.
I'd wish you luck with your exam, but don't think you will need it
Hope all is well.