Tim x Vick (Both around the same age, right?)
Stella x Prince (Odd because Prince is actually a chick and Stella doesn't know)
Lilith x Xenoko (a demon and a monk, go figure)
Sir Valentine x Wanderer (can't see this go too well)
Ares x Moon x Imagineer (I get the feeling Moon will be in a very awkward spot here)
Again, these are not meant to be forced romantic pairings,
it is for fun only. They can certainly be friendly outings for just the day of the festival. You may still interact with other players during the festival but will be bound to your partner[s].
Edit: Silver, I like the last one the best.