I don't think you can, ive tried it myself, ive tried getting married in another house but u still can't, the only thing u can do is expand ur house.
Chat with our AI personalities
The sims 3 for ds is much diffrent to the pc one i have it for ds lite i dont now about 3ds (on the sims 3 for ds you cant have a baby or o 2 floor house)
No you may not love you.
It seems like you cant move out. I looked all over the internets and there is nothing on how to move out. :(
when they move out, they will enter The Clipboard (the place where the Sims are kept after you've made them but before you move them into a house. From there, you can move them into a new lot to play them.
It's not possible to woohoo on the Sims 3 for the DS.