What can I do to show I'm interested?

long story short, this guy is interested in me and I am as well in him. He has shown me he is interested in me but says he needs signs as well that I am interested in him but I don't know how? I'm very elementary in showing men I'm interested in them because they always make moves on me, and my actions comes naturally but for some reason I feel awkward with him and not sure what to do. So what are little things I can do to show him I'm interested in him but yet not be all up in his face?
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