Welcome to MSF @
lookingforhelp626 - sorry to hear the person you felt close to moved apart from you.
I can only guess what was happening with her, but it seems like you really had high expectations of the relationship blooming.
I am guessing that when you were thinking of taking a flight to see her, she met a guy that was in her city or nearby and they hit it off so that was something she went for rather than an online friendship.
I hope you can find a way to heal. I would not blame yourself. I do not think you could have acted differently under the circumstances.
CANDC
[If you want me to see your reply to this post please include @
CANDC in your message - not in requoting my message and not the first word of your message]