When chatting with a boy, I saw that he changed his signature and said, "I like her, but she doesn't know. Maybe she knows, but she won't say." Then I asked him if he was happy?
Maybe I like you. But as he said, it may also be for entertainment and testing purposes. If you ask him, you like him a little. Most people don't ask. Didn't he test you this time? If a boy likes you, he can only formally confess to you and let you be his girlfriend, otherwise he is playing ambiguous.