She has no idea. She thinks they are just friends.

Mac, you aren't taking the high road. You also aren't taking the low road. There has been no conflict, and she hasn't done anything wrong. It's perfectly ok for a friend to send another friend a happy picture of themselves.

I'm glad you are talking to a therapist.

I wish you would even try to do any of the suggestions that we have been trying to give you to help you move on and form a friendship. But you haven't. You haven't even tried (at least based on the things you've told us).

You can't form or maintain even online friendships without some give and take. People here have listened to you, tried to interact with you. But you don't respond; you just keep telling us over and over the same things. Friendships require listening, and you haven't shown any signs of listening (even disagreeing shows someone that you are listening to them).

I'm sorry that you are hurting, but you aren't doing anything to help yourself (with the exception of talking to a therapist which is great!).