I used to always be like that, especially when I was in high school. Then I said fuck it and I became really confident, always putting myself out there and doing stuff that "embarrass" me or similar.

However, this thing hasn't gone away and it's making things weird when it happens. I may come off as confident and cocky and the moment my face goes red, the message that goes through is exactly the opposite.

The other day I was paying at a restaurant and I'd forgotten my wallet, so I told the hot chick that and I was about to make a joke when she turns around and calls for her boss to see if I could pay her some other time. When her boss came around, I had already flared up and she said "you are burning up, don't worry, you can go".

see, I don't have a clue why that happened, I wasn't embarrassed in any way, it's my body that reacted that way without my control... Same thing happens when we are discussing sex or similar stuff, sometimes my face turns red for no reason and it makes me look like I'm embarrassed when I'm not...

wtf is wrong with me? how do I fix this?