Marring sims

This is a bug with the 1.42 patch: http://sims3.crinrict.com/en/2012/10/wedding-issues.html

Curious to know but do you have Seasons installed ?

I'm now having this problem and do not have Seasons installed because it won't let  me intall it.  Whenever I try to install Seasons on my Mac I get an error message saying PowerPC apps are no longer supported (OS X 10.8.2).  I've been trying to get help from EA for over a week and the best they could do was tell me I had a disk formatted only for PC even though it clearly stated it was for both.  I even tried a 2nd disk but still same problem.  So in the mean time I went ahead and continued my play without Seaons and now my Sim just married a townie who is not in my household?

You can use the cheat: testingcheats enabled true

Then you press the Shift key + Left mouse click and Press 'Add Sim To Active Household'