It means he is interested in you but doesn't want give it away just yet.
If a guy says he is flattered when you tell him you like him, it typically means that he appreciates the sentiment and the compliment, but may not feel the same way romantically. He is acknowledging your feelings in a polite and respectful manner without reciprocating them. It's important to respect his response and communicate openly about your expectations moving forward.
There's a possibility that he was really flattered and saw your comment as a hint that maybe you like him too
he likes u
It means no.
Whatever you said to him to make him feel flattered does not need a reply or, you could say 'You are welcome.'
If a guy says that you are pretty it does not mean that he likes you. He could like you, or he could just be paying you a compliment.
You can tell him that you are flattered but you don't think of him that way.
It means he is the problem....not you
Dude he wants to do IT!!!!!
He likes you
nothing