<human>: Can you provide a brief rundown of the text in within 3 sentences?

My best friend, has been in a long distance relationship since May. They met online and haven't met in person. Recently he missed out on a visit because of a family emergency. 

The issue is that he has a history of domestic abuse charges. They've never stuck, but three incidents since 2011, with the most recent being this past weekend. 

He has gone days without talking to her then comes back with some fantastical story of how his ex was in a terrible accident and she is in the hospital so he was there. 

He won't add her as a Facebook friend or give her his house number because he doesn't want his ex to find out.  They have talked from his work phone though. 

I'm happy he didn't come meet her. I feel like a jerk about this and I want her to be happy. 

She won't break up with him because she believes that he was just in a wrong place wrong time situation regarding the abuse charges. I was kind of harsh yesterday and told her that domestic charges don't just happen. That she would be better off to cut it off and save her hurt later. 

She says I don't know him like she does. I said that she doesn't know him either. Just his online and on the phone persona.  He could be married or in a relationship or anything. Who knows?

I just keep seeing red flags and she just is so enamoured with this guy from the other side of another country. 

Am I in the wrong and should I back off? Or should I pursue this conversation with her?
<bot>: Best friend in a bad situation long distance relationship. I'm concerned and seeing red flags. I think I pissed her off about my opinions. Help!!!