Do I have a right to be pissed off?

My dearest friend that I’ve known since I got out of my mum’s vagina has been in a relationship for the past 2 years. Let me say that it’s a very toxic one. He can be the nicest guy ever now and the biggest fuckhead two seconds later. Everytime I went out with them he was really nice and caring. Next thing when we’re home and they start textig he turns 360 degrees around and I can’t actually believe he’s the same person.

Starting with the first thing he did to her - she was a virgin when they met and she wanted to wait a while. He forced her first time, she was crying and he held her down. She didn’t leave no matter what her other friends and I told her though.

He speaks to her like she’s a piece of shit, always swears and calls her names, controls her phone, she ends up crying for hours and he couldn’t care less. A friend of mine that I know since middle school reacted with the laugh emoji stuff on facebook at something she posted and he went mental about it. There are so many shitty things he did to her I can’t even type them all. But only from these few I think you already understand how much of an abusive cunt he is.

Everytime I try to open her eyes she’s like “I know I’m stupid for staying with him but I know he loves me” girl excuse me, if he loved you he wouldn’t treat you like a piece of meat. By the way of that, he refuses to use condoms and she doesn’t wanna go on birth control so she just keeps taking plan b like candy.

It actually pisses me off how she comes crying at me everytime ranting about what he did to her but she wouldn’t freaking leave him. Everytime they broke up she was the one reaching to go back to him. When I ask her why she accepts all of his shit she says that she just got used to him and that she feels alone when he’s not around. Like seriously he’s mentally and physically abusing you and you’re telling me you’re feeling lonely 🙄 I know I probably come off as harsh, but do I have a right to be pissed off at her? It just drives me nuts how she always complains but wouldn’t do anything for her well being. Sometimes I just wanna give her a hard slap, I’m actually surprised he didn’t hit her yet. I love her a lot but I can’t do anything to help her if he doesn’t wanna help herself. We live in different countries now and that makes it even harder, I can’t physically be there when she needs it