Dating a loner guy
And I also catch him looking at me from time to time.
But from what happened, I interpreted it as his not being interested with me, because if he really was he would've done something, knowing that it took me much courage to confess.
I would say he's interested at the lightest - considering his reaction and looking at you - but was not sure on how to deal with a new situation out of the nowhere (probably he's also not very experient with talking with women).
But he seems not to have a clue on how to go from there - womenly "subtle clues" will not work here, and it seems you will have some work to do yourself. I would self-identify as a 'smart and loner' guy.
Dating a loner may be difficult, especially if you are an extrovert.
If you find yourself trying to change your partner, stop.