Help me interpret his feelings. Every time I compliment this man I’ve been seeing (50s) he always smirks and acts awkward?

I (20s) am always telling this man (50s) I think he is sexy, hot, etc… which I do actually think that. He always plays it off or just smirks. Does he think I’m lying when I say it? What’s are some things I can do to impress him? He shows interest back, but with such an age gap I wanted more opinions.

Help me interpret his feelings. Every time I compliment this man I’ve been seeing (50s) he always smirks and acts awkward?
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