LJ Idol Presents:

tru2myart did it with 4 kids and a relationship :)
welfy - married
chite - married with kid (at the time, now kids)

The other two were single at the time they played one, although tinhuviel does have responsibility for taking care of her Aunt and boxsofrain was in a relationship for at least part of the season.

Personally, I think having a support network might have it's distractions but it also makes it possible to keep your head from getting too frazzled.