Ok so usually during lunch I sit and listen to music in the stall instead of going to the lunch room because I have no friends and I have social anxiety. But today during lunch I went into a bathroom i usually don't go in.... and there was this girl, also listening to music just sitting there in the stall. I could hear her eating so I knew that's why she was there. then the bell rang and we left at the same time and I smiled at her. I dunno how to make friends so can someone give me some advice on how to initiate a conversation through a stall?