My wife gave birth to a (black)baby that clearly isn't mine, and I'm divorcing her. But I'm worried about the relationship between my two kids and their new half-sister.

A month ago, my wife gave birth to a black baby girl. We're both white, so she was forced to admit that the child was a result of a one night stand last year. <br><br>We're getting a divorce, and I won't deny that the news of the child came like a bombarded to me. Even if I resolved to raise the baby as my own, the relationship with my other kids was bound to become difficult.<br><br>But, despite that, my two kids (7 F and 5 M) have taken to their little sister like a fish in the water. They love her and take care of her, and it's genuinely touching to see.<br><br>On Wednesday, I had to pick them up from school and daycare and when we were driving home, the three nursery boys (well, two of them, plus the baby) were sleeping, the music was on and my son says: "Did you know she's a dirty sl—'s baby?"<br><br>He didn't say stiff, but I could tell from the context that that was what he meant. I tried to change the subject, but when we got home, I found him dressing their sister in a way that was very very unlikely to be an accident.<br><br>I talked with him, and he apologized, but I began to worry about his relationship with his half-sister for the rest of his life. Some things that worried me were the fact that a man like Charlie can grow into a man like Roedel.<br><br>How should I deal with this? Should I have had this conversation with my daughter too? Should I have told her what her brother said? I didn't, but I can't help but wonder if I'm doing the right thing.<br><br>&#x200B;