Boyfriend talking to a female''friend''something feels off?suspicious!!

About almost TWO years ago, my boyfriend who is 37 asked me (28y/o) to do him a favor and to please call his female ”friend” to give her an address (which I looked up and it happened to be of a lawyer as far as I can remember). He wanted ME to do it because the woman’s husband is somehow violent,and jealous even of his own shadow, so basically it seemed to me that this woman in in some sort of abusive or toxic relationship she has 2 children with this man, and supposedly this man has even been in jail in the past, so my bf wanted me to do him the favor of calling her, Just in case the husband picked up the phone out of rage, that way he would think I was just her friend, and would not put her in any danger,,,this man had even called my boyfriend numerous time at midnight to tell him to not engage in conversations with his wife. and also smashed his wife’s computer for talking to much on Facebook and so on.

So 5 days ago,after almost 2 years of not mentioning her whatsoever after that favor he asked me to do, he mentions me this women AGAIN!! and the fact that now she is contacting him because she has ”suicidal” thoughts that she can handle it anymore because she is not happy with her life.., so he was emailing her back trying to talk her out of it,and told me that she is a long time friend and he is concerned of her doing something crazy or wanting to kill herself, But I don’t know what can possibly be going on here that after almost 2 years he mentions me this women again!!! I am very suspicious whether this can be a lover,an ex,What do you think can be happening?I don’t want to be played. gives me a weird vibe.