Afraid of being laughed at by her friends.

You just got engaged. It's been so short. In less than half a month, why did she suddenly dislike you? Is there anything embarrassing between you, or something happened to you that suddenly made her feel chilling and dislike you? Since we are engaged, we can't play games like this. I suggest you two have a good talk and get to know each other's inner thoughts. Let's see if we can salvage this marriage and relationship. If she's still alive, if you think she can. Just live a good life