Topic closed? No, not yet I see.
Good, that gives me some time to quickly answer your last question: your fiancé will unfortuniatly not be able to interact with you while playing his own game on his mobile. Just like the basegame, The Sims 3 is not, and probably will not be a multiplayer game. On the computer you can upload houses, selfmade sims and movies to the sims3 site but the sims hasn't be a online game since Maxis (owner off the sims before Electronic Arts) has launced The Sims Online, somewhere around the year 2000.
But because of not much people played the game online Maxis has desided to turn down the whole project. Since than, no online version of The Sims has been ever made and probably will not ever.
So, unfortuniatly, you can't interact with your fiancé on The Sims 3 Mobile..