My[29m] best friend[25f] doesn’t want to introduce me to her boyfriend?

We’ve been best friends for a little while now and she’s stated in the past that she feels the most comfortable talking to and confiding in me. She said she couldn’t explain it, but she trusted me more than anyone. We even considered moving away together.

Context is important, so I should explain that I ended up developing feelings for her. I confessed to her and she told me she didn’t want anything romantic. Obviously rejection hurts, but I explained to her that I still wanted our friendship because we were friends first and she meant a lot to me as a person. I let her know that I had no expectations and eventually things returned to normal. Or so I thought.

I recently had a mutual friend tell me that she has a new boyfriend. I kind of suspected it, but I figured she would tell me if it was something serious since we tell each other everything. I told her about a new person I’m currently talking to. The mutual friend told me that she was afraid to tell me.

I can understand if she didn’t want to hurt me, but she knows I’m in the talking stage with someone else. We were friends when she dated other guys in the past, before I confessed my feelings(I told her when she was single), and everything was okay then. I want her to be happy and I’m glad she found someone that makes her feel that way. I talked to her about it and she said that she should’ve told me.

Now I’m just feeling like I lost her trust entirely and I don’t know how I can get it back. I have so much regret in telling her how I felt.

Her boyfriend showed up to surprise her with candy on Valentine’s Day and she immediately ushered him to the opposite side of the room. I wanted to introduce myself because he seemed friendly, but I noticed she was visibly uncomfortable so I gave them space. But then I noticed a couple of our other friends interacting with them and it was clear they all already knew him pretty well.

It hurt and I got in my head thinking about how she didn’t want me to know and still doesn’t want me to meet him. I felt pushed away. I’m no longer her safe person.

Is there any way I can fix our friendship and earn her trust back?

TLDR: Best friend that I used to have feelings for is pushing me away and doesn’t want me to meet her new boyfriend. How can I fix our friendship?