<human>: Can you give me the gist of the text in a nutshell?

We are in our second year of university. She met him at the beginning of first year as they are on the same course and got together quickly. I now live with her.

To be frank he is emotionally abusive. I don't think he has ever hit her but he might as well have. So many times my housemates and I have tried to convince her to break up with him but every time she will just get back together with him. We don't understand because he treats her like shit.

For example, he refused to apologise to his own housemates for being rude and he got mad at my friend for not sticking up for him so she came back home. Afterwards he was texting her messages like 'dont ever speak to me again' 'i never want to see you again'. An hour later he tried to break into our house to see her. We've banned him from the house since then.

He manipulates her to feel bad for him like saying he will quit uni if she breaks up with him. And says things like 'you dont really care for me' and she falls into the trap of trying to reassure him.
She lets him get away with touching other girls and throwing tantrums if she doesn't send him her essays. I get the impression he never respects her in bed either.

We've tried so hard to make her see the light but even though she knows it's so bad she will stay at his house for days. She also says she's scared of being single. What can we do?
<bot>: My friend has an emotionally abusive boyfriend but she can never manage to break up with him, how can we help her?