I read that people with selective mutism have difficulty expressing affection and saw a documentary on a boy who couldn't say I love you. sorry if I sounded stupid to you but I read that on many different sources. I was very loud at home but didn't say a word at school. For years and years. I felt like my brain wouldn't let me open my mouth to talk even though I desperately wanted to. I was never treated as a child so it carried on to my teenage years and led to depression, panic attacks, etc. thank you for replying.