Engagement dinner turned into orgy

Ok so yesterday was the first time I played with a feature from my wedding stories, I heard it was broken but I didn’t expect the mess I got. so a couple in my game got engaged and I wanted to throw them an engagement party or dinner, I went to the calendar and set the event from there. When the engagement party started first thing I noticed there was no time circle and list of stuff I need to do to get a medal like in every other event. then the werdnies started everyone started to get flirty with everyone the groom and the sister of the bride had a romantic relationship all of a sudden and flirting in front of the bride while other charecter have romantic relationship with married women and people meting for the first time kissing. it was a big freaking orgy instead of engagement dinner. I have been playing the sims for years and never I have face something like this, I have mods in my game but there is no mod that will make my charecters behave that why I don’t even have wicked or wonderful whims and I like to keep my family and couple loyal to each other. So does any of you have any Idea if this happened due to my wedding story being broken ? Or there might be another issue ?