Katiegirl is probably right. Ever since the legion gave clark another ring, I think lois went to future or past and hopefully she will be the one to bring clark back to his senses.
Well, I believe she went to either the future or the past. Remember that future group gave Clark that ring so he could stay in contact with them. Remember in the one episode where they helped Clark kill Branic, the ring got the group to the present. I hope this helps!!
the writers of this show makes my head spin!! I love Smallville so much, but dang it I'm sorta confused. But, Smallville fans have "opened" my eyes to some stuff. Thanks katiegirl and oluosuere for helping (here) too!