Happily married dad (49) just found out that daughter (18, F), I had with wife (45), who is now a professor, was having a sexual relationship with her when my daughter was 17.

I'm not sure where to turn for this. I've spoken to a few close friends and my sister, but I'm looking for some outside opinions. I've posted this in a different account as my main account is tied to my wife, so the story I'm about to tell you my wife is included in the story but not credited as my wife.<br><br>My boy had a professor this last semester that was great for him. She was very kind, made the lessons very interesting, he had just a great time in class. The professor is a friend from high school and she just happened to land the job at the university. My boy is taking one of the classes she's teaching on a subject he isn't great at, but my friend was one of the best in this subject. So my son was incredibly lucky.<br><br>With that said, my daughter was completing a different degree plan, but was having a hard time. She kept telling us about how hard the lessons were for her compared to her brother and how this professor was her only saving grace. She was the professor for one of my daughters classes and she tutored her and helped her incredibly. Before you ask, no my daughter was not taking the same class as my son.<br><br>My daughter got a B- in her class. She was incredibly happy and my friend was also very proud.<br><br>This was all great up until yesterday. My son walked up to me, and he was not happy. My friend who is professor of his, was in a relationship with his sister. He showed me pictures of the two of them and my heart broke.<br><br>My son told me, that their relationship started before the semester began, and that my daughter was 17 when their relationship started.<br><br>I know what you're thinking, why didn't I know about it. Honestly, I don't know. They were both very secretive and my daughter told us she was busy with classes and my friend told us she was very busy setting up for the semester and getting everything ready for the year. We were all naive to the point, that we never expected what was happening to be happening.<br><br>My friend is 32 years younger than me, which makes her 17 years older than my longest child. Needless to say, she is half my age. We went to high school together, but I was a senior when she was a freshman. I do remember her, and I remember her being a very nice person.<br><br>I'm just in shock, and I don't know what to do. On one hand, if my daughter was 18 it would be ok. But she was 17. Which in my state is a felony. If she was a male, she would be doing prison time.<br><br>But the two of them are in love, and my daughter is happy and so is her professor. I want them to be happy, and they are both adults.<br><br>I'm such a mess right now, I have no idea what to do. My son told her that he was going to tell me, and he showed me a text message from my daughter that she and her professor had agreed to terminate the relationship.<br><br>My daughter knows that I know. I haven't talked to her yet. Just want to know what would you do?<br><br>Tl;DR: just found out my daughter (18) was in a sexual relationship with her professor (32F). She was 17 when their relationship started.<br><br>\*\*\*Update\*\*\*<br><br>I'm just still in shock and incredibly heartbroken. I feel betrayed by everyone and my kids, my life is turned upside down and I don't know what to do.<br><br>I did talk to my friend, she was very nervous. She was sorry, and said that it was a horrible mistake. I asked her if my daughter was the only underage girl she had slept with, she said yes. And I asked her if my daughter was the first person she had slept with in the 6 years since her divorce, and she said no. I told her that whatever relationship we had was now over and that I never wanted to see her or hear from her again. It was very hard for me, as we started as friends and were always friends. It's so hard for me to forgive that.<br><br>I then talked to my daughter, she was very apologetic and very upset. She was crying and I could tell she was sorry, and I could tell that she loved me. I just let her know that I knew and that I was disappointed in her for keeping this from me and that I just want her to be able to trust me and come to me. I told her I wasn't upset at her and she could tell that my voice was cracking and that I was about to cry. I then told her that she needs to go to the police station and report it so that there is a record of this in case something were to happen in the future. She told me she was afraid, and I told her I would be there with her and she didn't need to be afraid.<br><br>I then went and talked to my son. He was not happy, and I could tell that. I told him I was just as upset as him, but we needed to be the adults in this situation. I told him to go pick up his sister, and that we were going to the police station.<br><br>We went to the police station and my daughter was very scared. I told her that we would be here for her no matter what, and that we just want her to be happy. Though I do want this professor to face the consequences of what happened. My daughter was talked to by a younger female police officer who specialized in these types of cases. And I could tell my daughter felt very comfortable with the officer. She was able to recount specific dates, details, and the exact timeline of the relationship. I was very proud of her.<br><br>The police told us, that they would be looking into this matter, and my daughter would hear from them within a few days, but that they need to verify all the facts and the timeline that my daughter gave them. Though they told us that if what my daughter was telling them was true, her professor would be going to jail, lose her license, and likely lose her ability to work in academia.<br><br>I do want to know what kind of punishment the professor would get, but I believe my daughter's professor should go to jail. Though I just want my daughter to happy. This is just such a hard thing for me.<br><br>I'm still shaking writing this. I just can't believe that this is my life. I just want everyone to be happy, and I want to be able to trust people again. I feel like my entire world has been flipped upside down.<br><br>If you read this far, thank you for listening to my story.