Search Results: hard time trusting a new guy

I met this girl a while ago on social media and I've began to love her and I didn't realize she liked me at first but recently she's gotten a new boyfriend and I can already tell it's a bad relationship. One he's overzealous/jealous of her and doesn't trust her at all, two he argues with her a lot, and three he's caused her (not intentionally) to attempt suicide and cut herself both of which she promised me she wouldn't do.

I've tried to tell her to leave him but she won't and it's clear she won't be anytime soon and quite frankly I don't even want to be friends with her anymore as I don't want to deal with the pain that will come if she kills herself or cuts again over this guy. She says she loves me too but It's hard to believe as she never tells me when she's sad or rarely even tells me these things. I promised her I would never leave her but I'm started to think it's pointless remaining friends with her if she remains with this asshole of a boyfriend. It's so obvious he's only with her for her body or because of how she looks but she stays with him and when I ask her why she says "It's comfortable knowing I have her".

What should I do? She clearly doesn't care about me enough to as she's choosing him over me and her other best friend who she considers her sister so why should I waste my time? I'm tired of connecting with people only to get hurt in the long run intentionally or unintentionally because I KNOW for a FACT that if she remains with this guy she'll attempt suicide again and maybe suicide and fail (she's told me she's attempted it before without telling me though the most recent time she was going to attempt it she told me first and I prevented her from doing it) or cut herself (recently she's cut herself like 5 times) again and I don't want to be hurt by it as I love her a lot.

Also as I side note I promised her numerous times I would never leave her (she told me if I left she would be heartbroken but it doesn't seem l