My friend and I both are 21 F and have been friends since we were in kindergarten. Recently everything went down hill. I will call her B. 

A little thing about B whenever she is with a guy, she changes. Her personality changes, she talks to me less and all. I can understand that to an extent but it is weird when we were actually like sisters. I think the serious issue started when I was hospitalized for one week, needed to take heavy medicine. I didn’t expect anyone to come visit me. Whenever a friend worried about me and called me I just said ‘I have nothing to worry’ and ‘please don’t come’. It wasn’t as serious as a normal staying at hospital situation so I thought it wasn’t worthy to make them worry. But B said, she heard about me and she will come visit me. I realized I really needed a friend with me. I was lonely, bored and in pain also I hadn’t seen B for a long time, I had missed her. I was really happy she would come visit me but that day she didn’t respond to my messages until end of the day. She just said she had a laser appointment and couldn’t come. It felt pretty sad. (The worse thing is treatment lasts for 1 hour and her mother is the one working there, taking appointments so it was changable). I didn’t talk to her after I came home. 

Then she messaged me after 2 weeks. She said ‘she is sorry’’we are going to go out together always’ ‘she is going to buy me gifts and do whatever to make me feel better’

I was happy again so I accepted her apology. We hung out for once and it was just once a week texting with no soul. My birthday came up and she asked me if I want to do something with her. I had an event in my mind so we made a plan for that. So the event was 9am - 6pm and we could have gone anytime. When it was my birthday, she texted me at 6pm if I wanted to do something. I just said no and after one week only thing she wrote was about if I still have my cat’s cage with me or not. 

I don’t think I did anything to deserve this from the person I called best friend for a long time and I want to learn if I am asshole if I dont speak with her anymore. 