@Savana Brooks,
First you say he is avoiding you, then you say he is not "purposely" avoiding you. You cannot accidently avoid someone. The word is a purposeful action.
You start this thread by saying you saw him get off the bus but you kept on walking. Why didn't you stop and say hello? Certainly you were capable of doing that. Sounds like you are avoiding him. You don't even know for sure if he saw you.
So next time you see him, say hello. Talk to him. Of course, in a couple of years you will probably forget all about him as you will have started dating and gone out with a dozen others, so I would not fret over this one boy too much.