So I (17m) was on call with my friend (15f) on my discord server and another person. A mutual friend of ours, who also happens to be her ex joins and I say "isn't that your ex?" As a half joke. She loses her fucking shit at this and says "don't your friends ghost you for weeks on end" which is a very personal thing I told her in confidence and affects me deeply. She hasn't apologized and when confronted said "enjoy only talking to your girlfriend for a week or does she ghost you too". I have apologized multiple times for the comment I made about her ex but she refuses to apologize for what she said to me. Keep in mind after being confronted in DMs she told me she's only my friend out of pity and nobody likes me for a reason. I know she's not a good friend but she's right when she says if I cut her off I won't really have many other people to talk to. I just want to know if I'm the asshole for my comment and if I deserved what she said. I genuinely did not know my comment would be so hurtful (even though she said it's common sense despite multiple people telling me otherwise) and she says regardless of if it was an accident I deserved to be told those things