Am I the confusing one here?

I have known this colleague for almost 7 years now. Though he is 13 years my senior, he is unmarried. We are quite close and I am not sure if my feelings for him are purely platonic or there's more to that. He is very helpful and considerate but I am worried I might be overthinking this. I dare not ask him as I do not want to jeopardize our relationship. Does a guy willing to help a lady because his parents raised him right or he is expecting something in return?
Am I the confusing one here?
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