What does it mean when you told a guy coworker you like him and he doesn’t say anything but still acts nice around you?

Ok I get he’s a coworker and maybe I shouldn’t have gone there, but anyway I told him I like him because he’d given me signals, but he didn't say anything and now seems happy and nice around me.

Confused? It’s been two weeks since I told him and I’ve seen him twice and he’s nice.

btw- we weren’t really friends before.

What does it mean when you told a guy coworker you like him and he doesn’t say anything but still acts nice around you?
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