Here's an interesting, weird story that happened when I was playing Sims 3 some years ago. I made a sim named Biana. She was a great guitarist. I took her to the future and she soon fell in love with this sim from the future. The problem was that my game would not let her get married to him so I used some cheats to add him to the family. Everything was going well when she went back home. She got married to the future sim and she won a lottery (with the future expansion pack, it's unbelievably easy to win), soon she was pregnant. The pregnancy went to well. She gave birth to one, then it soon became 25 and the game was forcing me to name them all. The game glitched out. I left the household in the midst to see if it would stop. It eventually did and she only had one real child, the other babies were invisible clones (or something). In the end, I had to use cheats and grow her son up to an adult to move him out with the demon babies and something happened that got me stuck at a loading screen. THE END
By the way, has any of you had a sim that married a sim from the future?