Helpp

So my bestfriend got a boyfriend 3 months ago but they broke up yesterday she told me before she broke up that she wants my advice if she should stay with him or not actually i didn’t like that guy cause he has the control in the relationship and i think because of him we’re always having debates and even we lost our privacy cause she’s always talking to him either on phone texting or on a call whenever i’m at her place so because of this i felt that our relation changed

Yesterday i was giving her my advice that she should leave because of many problems (she will move to another place,she’s having so much problems with him,her parents doesn’t like him) when they were fighting i saw that her bf followed his ex on instagram so i told her that he followed her (his ex always talks to him) she told him that i saw this and they broke up after that he texted me saying that i’m a liar and i’m a whore and i did that cause i don’t want her to be with each other! And he said you’re thinking that you’re her bestfriend?

He said that cause i was hiding something happened with me from her cause i don’t anyone to know about it and i think bestfriend are not forced to tell every single details in their life to each other cause there’s something called “privacy” in life

Now i want to know if i did something wrong to my bestfriend cause i think she’s upset now