I agree with Pam and Trenna - Lois would *never* abandon Clark at this stage in their relationship. The only way you could make it work, IMO, would be if an external force trapped Lois in the alternative universe for a long time. She'd still never transfer her affections completely to altClark, but her emotions could get pretty confused nevertheless, because she does empathise with altClark and even maybe has feelings for him. Meanwhile, Clark would be devastated!
All you need now is a convenient external force...did I hear someone mutter
Wells???
Yvonne
