How can I flirt about a hug?

So there is this guy who I feel likes me but he is not comfortable with expressing his feelings but he is good with physical touch. I asked him for a hug and he said yes and gave me a lingering (maybe 10 seconds) hug with both arms. Should I tell me him over text that it felt good? Any other suggestions for flirting about this?

How can I flirt about a hug?
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