I didn't but I found out today when both me and Jamie my wife become elders.She was able to congradulate me on my birthday.I'm still learning a lot about the sims 3.Recently I learned sims can thank you for cooking and cleaning.

Yes, I've seen those interactions come up too. I like the "Cry on Shoulder" and "Console" interactions that come up after a loved one has died.

Those also come up when a sim finds out he has been cheated on or his spouse or even a romantic interest breaks up with him.

There are certain interactions that only come up when certain conditions are met. Such as if you get a promotion, the sim can "announce promotion" to others. However if a day goes by before you do this, you'll completely miss your chance to do that interaction

There are others such as "Did you sleep well", "How was your day", "Thank for taking out trash/cleaning up", "Praise/complain about written book" and so on. You really have to check constantly to see if there's something new there. Most of them will vanish once the moment has passed without you even knowing it

I like the compliment on dancing one.

Last night my sim was caught cheating, and then he had two extra options under Friendly, "confess to cheating" and "worry about relationship" to the one he cheated on.

I wish they could confess to cheating without being caught.Why can't they?People sometimes do this in real life.It would be good for drama in the game.

I can really see these interactions posing a problem in the future.. i mean, its base game and the "Friendly" Interactions menu is ultra cluttered.

Yea but most of them come and go, they don't all stick around forever to keep it cluttered

I remember when in my game, I got Kaylynn to ask Daniel to break up with Mary-Sue. He did, so I moved him in with Kaylynn.