Sims keep resetting after romantic interactions

For background, i play on xbox so i have no mods. I'm currently on my 3rd generation of a sim family save and i noticed that when the 3rd generation got married and went on vacation they would reset after EVERY romantic interaction, this has caused me to not be able to make my sims woohoo or try for a baby, I had to make my sims have a science baby..The bug started 2 months ago and it still hasn't been fixed, if there's any way to fix it please let me know. The only thing i think would work is just starting an entirely new save which i don't wan't to do considering that i'm on my 3rd generation.