Yes you can woohoo on the 3ds version. I have my sims flirt til you get a purple heart under the relationship status. Go to the bed, tap the relax option. You may then get an option that says kiss, or make out. Just keep going with those and woohoo will show up within a few options. Unless they're sleepy, hungry, etc. Also I noticed it posted earlier about getting divorced and remarried. You can't remarry after divorce. I found out the hard way. I've read elsewhere that only applies to the 3ds version. Kinda sucks. Anyway, hope that helps