[FULL] Delusional friend wants to sleep with my boyfriend to regain self-esteem

My delusional friend asked to sleep with my boyfriend so she could have her self-esteem back. Now she's calling me selfish, because I refused. Me and Kylie have been friends since our childhood. One month ago, her boyfriend cheated on her, which absolutely devastated her. Me and my boyfriend were there to support her. We did everything so that she could feel better. Recently, we took her out to spend time with us. We took her to dinner and on our holidays. Eventually, Kylie started to get better. She started to smile again and was looking very happy. But she kept herself away from dating, because she told us that she couldn't believe in a guy very soon. We respected her decision and were fully supportive of her. Yesterday, Kylie came to our house. My boyfriend was going outside to bring some food, so he greeted Kylie and told her to stay and have lunch with us. Kylie smiled and agreed. When he left, Kylie came to me and told me she wanted to tell me something. I asked her what, and she asked if I could do a favor for her. She wasn't looking at me while saying this, so I felt a little awkward. Then, out of nowhere, she asked me if it was okay if she wanted to sleep with my boyfriend for one night. I couldn't believe my ears when I heard this from her. It took some time to get my senses back, and I asked her what the heck she was talking about. She then started to tell me how bad and miserable she was because of her breakup. But my boyfriend treated her well and made her feel happy. She talked about how my boyfriend took us to dinner and on trips, which her ex never did. She told me she started to feel wanted while spending time with him. She also mentioned how her self-esteem got badly damaged, and now she can't trust anyone except my boyfriend. She said she wanted to feel herself once again by sleeping with my boyfriend, and that it would help her gain her self-esteem back and trust others in the future. She told me it would be a great favor to her if I agreed to this. I was listening to her, standing there like a dummy. After she finished her speech, I shouted at her and told her to get out of my house. At first she told me to think about it calmly, but I was in no mood to negotiate. After some time, she became aggressive towards me, calling me an ungrateful person, because she had helped me in the past many times, and now I wasn't helping her even once. She told me I was selfish and that my boyfriend deserved someone better than me. She said she would snatch my boyfriend from me and didn't care about our relationship. After saying all this, she left. Now I'm confused, thinking about what just happened. I went to my chat list to talk with other friends about this, but when I opened it, I saw almost everyone had blocked me after saying some horrible things. I was sure she had told our friends something. Around 11.30pm, my boyfriend came home. I was sitting downstairs. He came and asked me what happened and why I called him so urgently. I told him to sit down, which he did, and then I told him everything Kylie said to me. I didn't spare a single word and also told him that she fabricated something to our friends, which led to them blocking me. I showed him the blocked contacts. He listened silently, not moving his eyes from mine. From his look, I understood he was in total disbelief at what he was hearing. But he composed himself and hugged me tightly. I hugged him back and we spent some time like that. Afterward, he said he couldn't believe Kylie would think something like that. He told me he never allowed Kylie to think like that, and couldn't imagine she could say something like that to my face. He said he felt emotionally drained because he thought he was getting sisterly affection from Kylie, but now it seemed like his efforts were in vain. I comforted him by holding him close and told him it was okay and not his fault. At that moment, he sobbed a little, but he quickly regained his composure and took out his phone. He checked if Kylie had sent him any messages. Luckily, she hadn't. He then wrote a long text describing how disappointing Kylie's actions were and told her he never wanted to see her again and would file a restraining order if she ever came near our home. After sending that, he blocked her on every social media platform. He also texted two of my friends who blocked me, calling them cowards and thanking them for taking the garbage out of my life. Then he blocked them too. I was happy seeing how he stood up for me in this situation. After all this, we had dinner together and went to sleep. None of us have heard anything from Kylie since she left our house, and we don't want to. I hope everything will get better between me and my boyfriend. We are planning our engagement very soon. you