@Ragman,
Initially I, and to some degree still do, think it's nothing, but to catch him looking at me a little more than "the usual" amount of times a person looks at another person, it's kinda interesting...for lack of a better word.
The reason I haven't asked is because as you've stated, it could mean absolutely nothing. I think asking him about it would make things a little more weird and awkward between us--if that makes sense.
Besides if it's nothing, hopefully the staring ceases and I won't have to ask.