Why did he avoid me when I dressed up nice?

Guy was showing attraction towards me when I was dressed down or plain…

I only dressed up because it was my birthday. I wore nothing weird just a sundress with daisies and a hat. Nothing odd or inappropriate

when I came into the room my friend called my name and said I looked cute. He looked and smiled then looked down. But then his energy just changed like he was trying to avoid me!

Why did he avoid me when I dressed up nice?
Post Opinion