(It's hard not to wonder what's going on with Rarity and Rainbow; it just seems so convenient, given the reason for this gathering, but Twilight won't be so direct about it.)

If this really ties in with "Valentines Day," then I bet these flowers can affect how somepony feels about others. From what I can see, they might be able to simulate love...

(Then that white daisy from earlier starts up again and wow, Rarity has such eye-catching strut...woah, what!?)

...yes, the flowers! They can mess with emotions.