Dating

My boyfriend's friend "girl" is having relationship issues and asks me if she can sleep on our couch for a couple of days. What do I do?

My boyfriend tells me he doesn't want to invest in his ex friends life to be more than friends. They dated in the past, when he was hunky, they both slept together and admitted it wasn't going to work out and to stay as friends. Him and I have dated on and off and now we are teetering in a unknown zone living in an apartment together. We picked her up from work in another town in the middle of the night when she was closing and brought her home. She explained how in two months with her new boyfriend, he became obsessive. This guy has no car, no ged and no job. She has two kids and bikes 3 miles to work on a double shift. He asked me this morning if she can crash on the couch for a few days where we are 30 miles from her job. This means he'd have to drive her to work and pick her up if she were to stay with us. Should he meddle in and help her? I have a feeling this isn't going to be a good output. But I also don't wanna be the person to blame if something bad happens to her and her abusive relationship. She is trying to kick him out but only if he can find another place to stay. I'm a little insecure but I also dont want the inevitable to happen.
My boyfriend's friend "girl" is having relationship issues and asks me if she can sleep on our couch for a couple of days. What do I do?
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