How can I fix things with the girl I like?

I’m in an incredibly difficult situation with the girl I like. She’s a co-worker and I’m pretty friendly with her but we used to be much friendlier. We were very close for a few months until we got into an argument and since the argument things have been different. This is a long story so I’ll start from the beginning. She had a crush on one of our manager’s at work and at the time I had a crush on her friend. I was very open with her about my feelings so she was very open with me as well. She would tell me everything and we would talk everyday but mostly about our crushes which we were supposed to keep secret. It got to the point where I always wanted to talk to her and I trusted her with everything, and I would tell her absolutely everything and I’m pretty sure I exposed myself as the weirdo I truly am. She never seemed to really think I was weird but I did get certain vibes. Anyway, our relationship stayed like that until, like the idiot I am, I blabbed her secret to a co-worker. Word didn’t spread but when she find out I had spilled her secret she got real mad. I originally denied it but I couldn’t bear lying to her anymore so I came clean. Once I came clean we became friendly again but not nearly as friendly as before, we’re very friendly in person but she doesn’t text me or call me at all anymore and I really only talk to her at work. I’m not sure if I’m over-thinking the situation or if there’s probably something wrong. And if there is something wrong, I’m not sure if it’s because of our fight or if it could have something to do with all of the weird things I said to her. I guess it would help if I went into detail about what I said to her exactly. I basically would ask her a ton of questions about her friend I used to like, and when we got into the fight I made myself seem very desperate and clingy when I was trying to get her to forgive me. I really like this girl and I’ve been having bad luck with girls for a very long time and I don’t wanna blow things with this girl. I’m sorry if this wasn’t clear I’m just very distraught and desperate for some sort of guidance. I want to prove to her that I’m not as weird as I made myself out to be and that I’m trustworthy despite the fact that I spilled her secret. Is there any way I can achieve that?