One of my Sims got the wish to spin around with another Sim but all four spots where taken and I wasn't able to figure out how to do it.
I have a family with 4 fairies and 2 former Imaginary Friends when the family started to skate together he was just standing there looking forlorn and sad I thought maybe there was to many other Sims there already, but after a while the other one came to his aid held his hands and showed him how to skate and after a while he was able to do it on his own, it was so cute!