My sim just had an affair in front of his wife

As the title reads, my sim just had an affair (woohoo'd in the closet) in front of his wife with his ex-wife, and NOBODY is mad.

I checked their jealousy indicators and they are jealous of EVERYTHING, physical intimacy, flirting, everything - both of them - but nobody is mad.

Now, here's the thing, my sims's husband, cheated on his ex-wife with my sim, and kissed, made out, etc, in front of his (now) ex-wife, with mysid.  To my defense I thought it was his daughter when they were making out, but it was his (now) ex-wife.   But what in the name of Hotel Echo Lima Lima is going on.  Good lord, it's like Sodom and Gamorah up in Simville.  I'm starting to think this game was created by Don Lothario himself.