How do I respond to a male friend saying he “enjoy my time with you”?

I meet a guy at work (friend of a friend and works on a different line) and we started talking, and I’ve only meet him a few weeks ago and we only see each other at the gym and he says he enjoys his time with me and I’m not sure how to respond because I don’t want to lead him on and I want to be friends still with him.
How do I respond to a male friend saying he “enjoy my time with you”?
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