My sims rarely keep still. They are always trying to interact with each other to the point that I need to make them start skilling activities so they will be left alone. The kids are always interrupting the parents to play or talk and the parents are always trying to get to each other. I use an auto romance mod which means I don't even need to supervise my teens in starting relationships. They can get to "propose marriage" on their own. I used to have a flavour of the mod that allowed them to marry on their own but got frustrated by the number of teen sims being added to the household when I wasn't looking! :D