How do I portray a male teacher fucking a female teacher and getting her pregnant as a not-ok thing?

I’m a high school English teacher and I’m going to be teaching a John Green book that I really like in the spring, and there is a plot point in there that I need some help with, please. <br><br>On page, we do not see anything sexual between the two characters. Students don’t see it. It is not described. But it’s definitely happened. A 40 year old single father male teacher and a 28 year old single female teacher (not of the main characters and not teachers of the main characters) hooked up at a party over summer break and the female is now pregnant. <br><br>Green writes this in such a way that it is very matter-of-fact and not a big deal. Like, it’s not, you know? People hook up. It’s not an ideal situation, and it is risky, but it’s not a big deal, especially if they both consented equally. <br><br>However, I also don’t want my students to walk away thinking this is a good or even OK idea because… it’s not. A teacher having sex/hooking up with a coworker is generally frowned upon, I think, and rightfully so. Plus, bringing a baby into the world just because you wanted to get laid is a bad idea. It is not an ideal situation even if it was consensual and wanted. <br><br>Students won’t see the hookup itself, only the aftermath of the two getting together to discuss the pregnancy, and I just… I don’t want to act like this is nothing, you know? I want them to see that it’s not an ideal situation. I’m just not sure how to portray it that way when it’s written the way it is.<br><br>Any thoughts on how to handle this in class?