My sister's husband secretly works for me.

I am CEO of a software development company that is in its first stages of growth. We sell a B2B SaaS product in various markets and our current team consists of 15 – 20 people. We work with freelance contractors from all over Europe for sales, customer support and marketing.<br><br>Around a year ago, my sister told me she wants to leave her job as a teacher but she'd like to work remotely and continue in her current field. I suggested to her to become a freelance copywriter or content writer, so she could write articles and contents for various industries and clients. She was happy to be able to work in comfort of her own home and she was doing a great job in creating valuable content for my clients.<br><br>She met her future husband around a year ago at a party and she told me how much she likes him. It turned out that he is actually working for a couple of my clients as a social media manager. He was creating content, responding to the comments and creating a buzz in every social media account he managed for them.<br><br>I found out a lot about him and I decided to secretly contact him and ask if he would be interested to work for me. After a couple of days, he agreed to work for one of my clients and I told him that he needed to keep his identity and his work hidden from my sister. The agreement was as follows: he will get his money in my company's bank account, and I will pay him in cash – and he had to keep his job for me a secret.<br><br>When my sister told me that she was dating him, I was a bit worried, since I didn't know how serious the relationship was. However, after a few weeks she told me that she's in love with him. They were just dating for 2-3 months, so I was a bit worried about that and I told her to slow down a bit. However, it was too late. She was pregnant at the time and I found out a few days after her birthday, which I celebrated with them less than a month ago.<br><br>This week she told me that they decided to get married. I am happy for her and I will attend the wedding, but I am extremely worried about her and her baby. The reason is that I caught him cheating on her. I have an online tool that tracks every activity in the social media accounts that my clients use. I also found out that he used these tools for his own account and he regularly checks his fiancée's social media activity.<br><br>I found out that she was cheating on him with one of her former colleagues at school. However, he was cheating on her for years. So, I decided to check his activity on other social media accounts that he manages for other clients. I found out a whole network of women that were regularly in contact with him and I found evidence that he was flirting with them and obviously – cheating on my sister.<br><br>I don't know what to do. I regularly check his activity and I found that he is having a sexual relationship with a woman that is married and whose husband is one of my clients. I feel terrible for my sister and her child, especially since I know that this guy doesn't have a job and his whole career depends on me.<br><br>I have two options here: either I let him continue his work as a social media manager for my clients, and probably let him cheat on my sister for the rest of her life, or I confront him and tell him to end the relationships that he has with those women. But, I'm afraid that he will lose his mind and try to harm himself or my sister.<br><br>I was thinking about telling my sister, but I also have doubts about that. I'm afraid she will break down if she finds out that he was cheating on her. I was thinking about talking with a lawyer, but I don't know what he will be able to do about the whole situation.<br><br>As you can see, I'm in a terrible position and I don't know what to do about this whole situation. – and I would appreciate any thoughts you guys have on this.<br><br><br>Edit: In the last year, we've been only living on credit cards. I do have money in the bank but it's the money that I have earned in my past life. I am doing my best to get out of debt but it's taking a while to get back on track.<br><br>As for the guy, he is probably in his early 30s. I don't know if he has a job or not. The only thing that I know is that he earns okay money from social media management and copywriting. I've never met him in person, and I don't have any evidence that he has a mistress. I did however find out that he has a whole network of women that he regularly talks to on social media.<br><br>One of them for example is a woman whose husband is managing a client's social media account. He is in his 40s, and I think he probably doesn't know anything about this. I found evidence that he was flirting with her and obviously – cheating on my sister.<br><br>I don't know what to do. I regularly check his activity and I found that he is having a sexual relationship with her. I feel terrible for my sister and her child, especially since I know that this guy doesn't have a job and his whole career depends on me.<br><br>I have two options here: either I let him continue his work as a social media manager for my clients, and probably let him cheat on my sister for the rest of her life, or I confront him and tell him to end the relationships that he has with those women. But, I'm afraid that he will lose his mind and try to harm himself or my sister.<br><br>I was thinking about telling my sister, but I also have doubts about that. I'm afraid she will break down if she finds out that he was cheating on her. I was thinking about talking with a lawyer, but I don't know what he will be able to do about the whole situation.<br><br>As you can see, I'm in a terrible position and I don't know what to do about this whole situation. – and I would appreciate any thoughts you guys have on this.<br><br>Edit2: I am not sure about this at all. I was just thinking about talking with him about this, but his attitude is bothering me a lot. He texted me his address and told me to come to his apartment to talk to him. I don't know if he will get angry or not, but I still need to talk to him.<br><br>I've been having a lot of issues with my stomach – and I think it's because of him. I was also afraid to comment on this post for the last hour, because I got a lot of messages from people who were sending me threats and stuff.<br><br>I don't know what to do. I'm afraid about this guy and what he is going to do. Part of me wants to tell my sister that he is cheating on her, but I don't have evidence. I also don't know how to confront him.<br><br>I'm thinking to go to his house at night and tell him that I know what he is doing. But I'm afraid about his reaction. I can see that a lot of people don't understand the whole situation and what's happening. Someone even wrote that I should let my sister cheat on him. It's just – I know this guy and I know what he is capable of doing.<br><br>I'm thinking to talk to my lawyer about this situation. I have seen some lawyers that offer free consultation and I might schedule a meeting with them. It's madness – he wants me to come to his house for a talk. I have an idea, but I'm not sure if it will work.<br><br>Also – I've been receiving messages with disturbing content. I don't even want to mention what they were saying – and I would like to ask you guys to please not to be rude or aggressive. I am still a human being – and I don't deserve to be treated this way.<br><br>Edit3: I feel terrible and I don't know what to do. I don't know if he wants to harm me – or if he is going to leave my sister. He said that he will talk with her about everything that happened. I'm so worried – and I don't know what to say to her.<br><br>She called me around an hour ago and was sounding weird. She only said that she was feeling sick and that she wants to see me. But she didn't say anything else for a while. I am going to see her in a couple of minutes.<br><br>I'm so sorry if I complicated anything. I didn't want to harm my sister or her husband. I just wanted to help my company and my clients by hiring – and I didn't know that he was dating my sister. I didn't know she was even interested in him at the time. She was just saying that she liked him.<br><br>I'm so tired. I can barely sleep at night and I can barely concentrate on my work. I am doing my best to keep my company going – but I'm worried that he might go crazy if he finds out that I know about his cheating.<br><br>I don't know what to tell my sister. I am going to see her in a few minutes and I don't know what to say to her. She was my best friend growing up and I always felt like I had to protect her and keep her safe. But now – I've never felt this way before.<br><br>I am so worried about her. I am so worried about myself and I don't know what to do.<br><br>Edit4: I talked with my sister and I told her everything that happened. I told her about my business, – and I told her that her husband was working for me. She didn't know anything about this – and she was very surprised and angry.<br><br>She told me that she was unhappy in her marriage and that she wants a divorce. I told her that I would support