My sister is 17 and is in an abusive relationship with another 17 year old. She split with him yesterday but is now considering a break. There's a lot that has been said/happened so trying to cover the main points! He bombards her with calls or messages if she doesn't get back to him, even when knowing she is with her family/out doing something with us - therefore knowing she's safe. He seems to ruin any big events for her, any parties theyve been to he's kicked off about things and either forced them both to leave or has left her there. He threatens suicide regularly - once was when we went to a festival and she called his mum. His mum showed no concern and said he's outside the house and he's fine. Id say this shows she knows what he's like. He said on the phone, if he kills himself everyone knows 'whose fault it is'. He accused her of cheating because she 'no longer begs' if he threatens to leave her (which he does regularly). He's threatened twice to have someone 'jump' her, and has recently said to my sister that he will have someone jump my stepdaughter. He gets enraged over small things. She once didn't answer him for 20 minutes and he called her 34 times, sent reems of messages saying he was losing his mind and wanted to hurt himself, and got two of his friends to message her (one of them was nasty) and messaged our other sister to ask where she was. Since she's told him they've split up, he's obviously showing remorse and accountability and is pouring his heart out. This is her first relationship. I had an abusive 10 year relationship just like this. With a textbook narcissist and it's like watching my own relationship, so I do need to be aware that I might be biased and looking for red flags but...surely I'm not mistaking this, and he definitely is abusive? They're young, I get it, but she's 6 months in to this relationship and I'd love for her to walk away. I've given my opinion etc but have said I aren't judging her, I'm judging him. But I am concerned for her safety - if something physical doesn't happen, her emotional wellbeing will be shot (we've all agreed that she's not seemed herself for months and she's admitted it). Just looking for some advice really, or opinions on what I think/how I'm seeing this. Thanks in advance.