Still single but not ugly, just stupid

yup, this is like the 3rd time it happens, but yea, a pretty nice girl, i liked her and she liked me, today came up to me and said that she dont like me anymore, and i was a lil bit shocked cuz i really thought she was just being nice to me out of nowhere, and i also thought it was just a very close friendship, and now i realize how stupid i was... it was pretty obvious ngl, but she knew that i was stupid, she could only have told me, id prolly scream SAME lmao