This is one of those questions that you won't know the answer to until you spend some time with him. Does he enjoy being around you? Does he accept invitations from you? (Ex. Wanna go to ______?)
Whether he thinks about you or not, I really cannot say..that is something you need to find out from him.
I'm sorry I could not be more helpful in your situation- but this is one where you will need to take an initiative to find out on your own. Some matters of the heart are only revealed through your own initiative.
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