Am I in the wrong for being honest?

(english is not my first language so i am sorry for any mistakes)

So like 2 days ago my bestfriends boyfriend called me to ask about her birthday present if it is okay. And I happily helped him with everything and all and after that it was like 11.30 PM and he just wasn’t saying goodbye or anything and I was waiting for that because I am really socially awkward and it’s hard for me to do things like ending a call. So we were just talking and ragebaiting each other (AND MY BESTFRIEND KNOWS IT ALL SHE HAS HIS IPAD WITH LIKE THE CHAT HISTORY AND ALL). And we just started talking about more serious stuff because it just happens to me sometimes when it’s late and she texted him something like „I don’t feel that comfortable in our relationship anymore” i’m not sure. So I was trying to help him talk to her and shit and I learned that she was lying to me about quite a lot of things and I noticed that she was lying to him. And here comes the problem because at that point it was like 2 AM and I wasn’t in my right mind and I just told him everything I knew (things like her lying about drinking when she said she wouldn’t or meeting with her guy friend and I had to lie about being with her then EVEN THO HE SAW ME LATER THAT DAY WHEN SHE WAS SUPPOSED TO BE WITH ME) and I was thinking then that it pretty rational decision to say the truth. And the next day he confronted her about everything saying that he knows all this from someone but he can’t say who. But she is really smart so I am sure that she knows that I told him all of that because also she knows that I talked to him. And ever since their confrontation and a little fight they has (it’s okay now) she is really distant from me and is like constantly viewing my tiktok and reposting some fuck ahh corny things like „when the girli thought was a "real" friend is honestly super fake but it's okay because i had a feeling since jan” AND IN JANUARY WE RECONSILED AFTER A BIG LIKE NO CONTACT SHIT WE HAD BECAUSE SHE DIDINT LIKE MY OTHER FRIENDS THAT I DITCHED FOR HER THEN.
So does anyone have any recommendation on what I could do? Or at least can someone tell me if I fucked up like big time or not?