My wife admitted that she has cheated on me previously. What is the next course of action?

My wife (34F) and I (43M) have three children together, ages 3, 6, and 8. We've had almost zero sex the last 9 months. She is a stay-at-home mom, so she is with the kids all day. I work long hours at my work, and also commute a couple of hours a day. Despite this, I always make time after work to play with the kids, even if it's for only 20 minutes before they go to bed. <br><br>I've been extremely faithful during our marriage. I have never looked at another woman, never flirted, never even watched porn after getting married. The marriage has been great until this year. The lack of intimacy really started to bother me, so I decided to talk to her one on one about our sex life. She was very quiet, and didn't talk much. I asked if she is okay, and if there is something going on. She then just blurted out that she has cheated on me in the past, multiple times, and with multiple men. She asked for forgiveness and said that she loves only me. <br><br>I was in shock. I didn't say anything. I went upstairs and cried. I cried so much. I have given her my world, and this is how she paid me back? I didn't sleep that night. I couldn't. The next morning, I acted as if everything was normal. I kissed her goodbye, and told her I loved her. I kissed the kids goodbye too, and went to work. While at work, I was in a daze. I couldn't focus on anything. I couldn't even look at my coworkers. My mind was blank. I couldn't stop picturing her having sex with other men in my bed. I couldn't stop picturing her blowing other men. I couldn't stop thinking about it. The last few days have been a zombie-like state for me. <br><br>What is the next course of action to take here? She is the love of my life. I can't imagine being with anyone else. I don't want to leave her. Or the kids. Or the house. But at the same time, I don't know if I can get over this. She is the love of my life, but at what cost? What would you do here?