Illigal connection

Sir/madam, I am posting this behalf of my friend . My friend was trapped by a middle aged woman who lives near his house.. although she got married and having to 2 children with her husband she looked out for a secret physical relation with boys to fulfill her desires, her husband never cared about her . My friend got to close to her and started loving her deep for almost 3+ years now my friend is 25 years old , she used him for money too, my friend realised that she is becoming psychotic and started to behave abnormal when her desires are not meet like money and sex , he began to avoid her . Problem is now she is threatening to commit sucide , she is saying that she will drag him on road. She also demanded money several times for leaving him, but this time we got it recorded when she is demanding money. Along with that she recorded every conversation and speaking like innocent while recording the whole thing .. I am not in a position to decide who is wrong and whom to support as illigal connections are the worst things to support .. but my friends is so frustrated that he wants to commit sucide because of this .. please give us your suggestions and what actions can we take against her and what will happen she really attempts a fake sucide and tries to blame that on my friend. How to deal this issue. .. Thank you in advance .. i hope this post will reach all teenagers out there and realize how horrible these kind of relations are..