<human>: Can you condense the text into a few key points?

We met online 3 years ago, and hit it off instantly. Physically, he's everything I could ever ask for. Intellectually, he's on a whole different level of consciousness, as he would put it. He is literally a rocket scientist. Not an exaggeration. We just click. 

He was afraid to start anything serious because he's a pilot and he's away for long periods of time, and he doesn't want to do that to someone. I've told him time and time again, I would still be here. I'm the friend he calls to tell he'll be gone a little while, and I'm the friend he calls when he's home. We have never spent any time together where cuddling or other romantic or sexual behavior didn't ensue. Many times, he makes me spend the night, because he doesn't want me to leave. 

We're both extremely open people, we've both been in monogamous and polyamorous relationships, and open relationships. 

Our current obstacle is that a) not only is he still a pilot who leaves for long periods of time, but b) he moves out of state for school in a few months.

Should I ask him how he would feel about an open relationship? I can't look at this guy without falling for him more and more every time.
<bot>: We've been on/off for three years due to circumstance. Do I ask about an open ended relationship to really cement our feelings for one another?