Knowing when someone loves you?

Knowing that your respective futures are very much uncertain, I completely understand why he's reluctant to make a long-term commitment. The job market is capricious; who knows where you'll each end up? To strengthen the relationship bonds now would only tie him to a potential long-distance relationship, something he's very likely not excited about.

After six months, he still likes you. There are far worse situations in which you could be. People come and go, no matter how fond we are of their presence. You have a college graduation to be concerned with. Get yourself a good job, a decent place to live. If he's still around, worry about his commitment then.

Jam it back in, in the dark.