My BFF seems to be moving on, But I have yet to do so…

My best friend and I have known each other for four years. Around 2 years ago I realized I may have caught feelings for her.

We used to be so close-knit, texting each other every day even on the most boring topics. But now, it feels one-sided, maybe it’s that she is busy, or maybe it’s because she has simply grown disinterested in me. Now, I am the one who usually reaches out and it’s hard to carry the conversation.

I think it’s time to let her go, but I am also so reluctant, after all, it’s been years since I have felt this way about her. But I never told her because I’m afraid she would be put off by it. I have already tried many times to convince myself that she’s just a friend, but it only works until she acts intimately with another friend. Then, the defense sort of breaks down and I feel extremely hurt. Ever since another friend popped into our lives I feel as though she isn’t as close to me. I did bring it up to her once but she said that she didn’t notice that she was acting different at all.

I am also reluctant to talk to her directly about it because who am I to interfere with her relationships? Especially when it allows her to talk how she wants and speak freely. Secondly, what if she doesn’t tell me truthfully how she feels because she thinks it’ll hurt my feelings? I feel as though asking her directly will be too confrontational and make her pull away even more.

Seeing the texts she messages to others makes me wonder what I am doing wrong and how I can do better or change my approach to texting her…

TL;DR :
My BFF who I have one sided romantic feelings for seems to have found someone better. How should I diminish these feelings? Or should I confront her? Just give it to me straight!!! I can also answer any questions about my post, I’m not the best writer.