Do you think he liked that I complimented him or he was embarrassed?

So I was coming up the elevator to my floor when the door opened a guy that lives on my floor was ready to go in. We almost bumped into each other & he's taller then me so I complimented his height as I walked by him. Then I looked back at him with a flirty smile & eye contact, he looked back at me with a smile too then left on the elevator. I know I caught him by surprise in a good way, I'm attracted to him so I'm not sure if he would be into me too. He's spoken to me once when he said thankyou so that's good.
Do you think he liked that I complimented him or he was embarrassed?
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