Unfortunately, the sims team removed the feature for pets to be flower pals and ring bearers from the new ‘My Wedding Stories’ game pack. Why though? Could it be due to time/resource constraints?
Sims Forum User 83bienchen finds hints/leftovers of plans in the tuning files.
Thankfully, mod creators have already come to the rescue. Chipped’s Creation Corner has already released a game modification allowing pets to be flower pals.