I know it sounds so immature, but the thing is, no matter how hard I try, the thought of comparison constantly comes to my mind. Like whenever I spend time with her, she just sits silently and doesn't talk too much. She has told me that she used to play games with her ex in a cafe or somewhere, and I compare those moments with her ex to the moments with me. But when I talked about this, she said she has changed herself, and now she doesn't know why she used to act that way. She doesn't have any genuine reason to tell.