If a confident guy freezes up or gets quiet around uou, what does that mean?

People are not just “confident” like it’s part of their personality. Someone who appears confident (assuming they are not faking it, which is way more common than you would think) is someone who is not anxious in the specific context your observing them in. E. g. they have an easy time being with friends of the same gender, or playing a role which they are used to. They will suddenly become “not confident” when they are out of their comfort zone.
So, if your observation are accurate that he freezes around you, it could mean that something is out of his comfort zone. It could be that he’s afraid of you for some reason, just to throw a random thought. For example some guys will be scared to be judged by people who can get them in trouble, or remind them of their parents or whatever.
All of this was to just introduce the answer you were looking for. It could be that he likes you and doesn’t want to mess it up, and he’s “out of his comfort zone” because he doesn’t know how to handle a situation where he’s emotionally vulnerable. We’ve all been through that, so it’s a likely explanation. Maybe not the only one.
He is afraid of messing up and saying the wrong thing.
Opinion
10Opinion
Guys usually only get nervous around girls they really like or have a crush on, otherwise he will be normal.
Sometimes it might mean he likes you but usually it means he is just Shy and doesn't really like talking that much.
Freezes up how? If he’s quiet around you and loud with others he probably is attracted in some way
You're walking around the room and he stands straight looking ahead and not at you
if he is confident it means that he is not interested in you
Might mean he likes you
He's afraid of messing up
Fear will keep them in line...
You know very well what that means dear.
if that's all that happens, it means nothing
He knows when it is time to shut up.
Nothing
Superb Opinion