Re: You wanted an alien spouse? Well...
@RavennaSanguine, No one should be forced, but since the events take place off camera on a spaceship, I just assume the impregnation was consensual! 😉 However, since your Sims in question are in relationships, this is a bit more problematic! 😞
If you have someone in your household enter into the Scientist career, then they can eventually make a satellite that you can use to prevent abductions! Or, if you want to use a cheat, you can bring up the cheat box by pressing "CTRL+Shift+C" and then typing in the cheat box either one of 2 things (I can't remember which one):
type either "bb.showhiddenobjects" and press "Enter". or if that doesn't work type "bb.ignoregameplayunlocksentitlement" and press "Enter". One of those should work (I think it is the bb.showhiddenobjects one, but I gave the other just in case! From there, go into the electronics section and it should be under both the Misc. category and the Show All category. It costs $500 dollars. Once place click on it and choose the "Prevent Abductions" choice! 🙂
Hope this helps! Please feel free to update if it works, (and if it does, click "Accept as Solution" so others can find it) , and if you have problems with it, please tell us so we can try to solve it!
Happy Simming! 🙂