I hope maybe someone can relate to this, and I'll do my very best to express the situation is as neutral a tone as I can.
A couple of years ago my wife and I split up, and while we share custody of our 3 children they live with her most of the time. I had gone through a stage where I was inactive in the Church and didn't live the Gospel very well at all, but eventually got back on my feet and found a new wife who has joined the Church and all is well on that front.
The problem is that recently, my ex found a new boyfriend and in no time at all they started to sleep together, justifying it in the eyes of the kids by insisting that nothing immoral is happening. My kids are very uncomfortable with what they see as a thin rationalization of something that ought not to be. Recently she came to me to tell me she'd ceased wearing her garments because she felt that living the Gospel was just too taxing and wanted to not worry about it anymore.
I feel like I'm in a very difficult position because yes, there was a time when I too was setting a lousy example as well, so I feel like while I am now responsible for setting a good example, I feel, at the same time, like a hypocrite. I don't think I can take the moral high ground, but somebody's got to otherwise I fear my kids will lose their testimony. It's true that I'm an example of the forgiveness of the Savior and how it is possible for someone to fall and pick themselves up again, but when the kids spend 90% of their time living with their mom, I feel helpless to take the reins, as it were.
Anybody else experienced anything like this?