I posted a similar topic a few weeks back. However, today on my way to work after dropping off my kids at school, I passed by her new fancy rental house (since she conveniently moved right by the kids school - also while I am in debt to my ears primarily due to her materialistic needs when we were married, granted I did keep the family home). I saw his vehicle parked out front of her house. The questions I asked myself was...Is he spending most of his time there, maybe even living there, while my two children are with her? I know for a fact they have met him, but not sure how he is presented (as a friend, co-worker, or are they out in the open about it). My kids do not say much about how things are when they are with their mom, nor do I generally ask. Him being with her is completely fine with me. I've realized they are made for each other. I have also come to the point where I don't have the anger I once did towards him because he made me realize what type of selfish, irresponsible, and fake person I was married to. Also, not to mention it took her to commit herself to him and pursue him. I have come a long way and for the most part at peace regarding all of that. She, as I'm sure many of us deal with, is the type that speaks volumes about what a good parent she is, but yet her actions completely show that she, along with keeping her relationship with him, is primary. Let me add, she is closer to 40 and he is barely past his mid 20's with a felony record. Although, I hear he has realized his mistakes and is making things right. I am now divorced, not even a year yet with that status. I have two children with the ex. First and foremost, they are everything to me and putting them first has helped me avoid reacting on emotions and probably getting myself in trouble. When I first met her, she already had two children who I raised from toddlers to teenagers. Initially, they would also spend time with me on the same schedule, which is 50/50. Things have changed and now they live with her, since I had no legal rights. It appears they have made the adjustment, and so have I. A plus for them, is as teenagers, she gives them a lot more freedom than they have ever had and pleases them somehow with anything they want. I imagine guilt may attribute to this, since they discovered her affair back when we were still married (they read explicit text messages, saw pictures on her phone, etc). Therefore, without me saying anything, they know that this person she is with is the same person she was having an affair with. We (me and the older children)still talk and have a good relationship and I genuinely love and care for them just as I always have, however it is different now. After passing by her house and seeing his vehicle there, it in my mind confirmed that he is definitely staying there while the older two children are there, so what is going to prevent him from staying when my younger children are there? I know that there is nothing I can do. However, I find myself with a lot of anxiety, sadness, and am experiencing some anger with the thought that he may be either staying there or being around my children occasionally or perhaps even living there now. Since I am not sure what the arrangement is, my big question is do I address it with my kids? All I want to get across to them is that it is not a secret that their mom's "friend" is coming around while they are there. I would like to tell them that I either know or have known (not quite sure how to phrase it) about it. The reason I want to get that across is that I feel that they may feel pressure of keeping a secret on behalf of their mom and don't think that is a healthy situation for them to be in, nor does it set a good example (but then again their mom's behavior in general does not set a good example). I also want to let them know that as their dad, which I will always be, no matter what happens (if this guy moves in, they get married, etc)one of my many responsibilities is to protect them. Since I am not always able to be with them, I want them to know that if somebody (and yes in my mind I'm specifically thinking about him or their mom neglecting them to satisfy his needs)is mean to them, makes them feel uncomfortable, or they just feel like something is not right to talk to me about it. I want them to know that I am only concerned about them (and I am still concerned for the older two children being around him) and that they are treated good. So do I have this conversation with them? What is ok to say and what is not? I do my best to never say anything negative about their mom (even though I do feel that she does the bare minimum for them and just tries to buy their love...the actions don't match. Do I wait until they mention it or should I be proactive? Do I address it with the ex first although she has proven to not be honest and doesn't deal with reality well, as we all know is the case with cheaters? I also wonder if I have a conversation with my children are they going to go and tell her, even though what I would tell them is nothing that I wouldn't say or tell her). I guess since I just try to keep the spirit of cooperation with their mother to avoid further conflict and because it is better for the children, I do think about the impact of any of my actions. I know I'm full of lots of questions and emotions but any words of advice will be helpful. All in all, I just want what is best for my kids. Thank you.