Please Help! I noticed on Dec.15 that, suddenly, brothers and sister now have the option to be Romantic. One brother and sister had a baby without my consent! I haven’t downloaded any big game Mods recently. I don't know what may be causing this. If you have any sort of insight Please let me know

You haven't downloaded Awesome mod?

Cause one of the options is pedophilia (with possibility of police arrest)

Nope
I dont have Awsome Mod

I do have Inteen 3 though
But I've had that for a while. This business just started yesterday.

What version of the game are you running? That is, did you install the patch released on December 14? And, if you did, have your mods been updated for that patch?

Nopes.
I have no Patch.

I guess no one can help

If you don't play with an autonomous woohoo mod, this could also have happened if you switched active households at any point. I use Inteen 3 as well, and my sims DO get preggers often enough when I change active households. Stupid Mortimer Goth knocked up Bella Bachelor while I was on another lot, even though she was Malcolm Landgraab's girlfriend at the time.

Oh Goodness
Crazyness

I've had Inteen for months now and I switch household constantly and this issue occured for the first time yesterday.

Could this glitch happen from downloading little stuff like shirts,hair,etc???

Yes but that's pedophillia not incest.

Pescado's not that sick.. or is he? .

When you removed all your mods and custom content, did the behavior stop? If so, it's your content causing the trouble.