Im confused about his response?

Frist I really like this guy I know that I need to back off some tho...he lives in ohio I live in California and the distance is killing me. We used to text everyday all day. He would be the frist to text but things changed and I knew something was going on so I asked him whats wrong with him he told me theres a girl that he likes and they work together and its confuseing him. So I asked if he wanted me to leave him alone he replayed no to be honest that confused me so I asked him, what am I to him? He.didnt respond.for a while then after 5 mintes of a whole lot of nothing he said, " look lady I cant let myself think about that." I askd why not, he said " becuase your not here." ...wtf dose that mean? Is he scared to admit to himself his feeling for me to...is he just not that into me? Should I just walk away now? I really like him im already half way in love with him I dont know what to do anymore