Every ep with Lois in it develops her relationship with Clark in some way -- or, at the very least, develops her understanding of what it is to be in a 'super' relationship.
Just to prove that the relationship arc is there all the way through, below has spoilers up to where we are in Season 9 --
Season 4 -- The first two eps are key, as there is great chemistry and banter between them.
'Krypto' is probably the first real bonding ep, when Lois hits a dog and they adopt him.
Season 5 -- 'Aqua' is where we meet AC (Aquaman) and we see Clark jealous or at least over-protective of Lois.
'Exposed' -- we realize the sexual attraction Clark has for Lois, and we see how far he is willing to go to save her.
Season 6 -- 'Arrow' Clark realizes something is special with his attraction to Lois when he kisses her as Green Arrow. Lois does too, though she doesn't know who kissed her.
'Crimson' First red K ep with Lois. Lots of little intimate moments that make you wonder -- Lois even asks it -- 'is this for real?', about their attraction for one another.
Season 7 'Siren' -- Lois wonders if there will ever be someone for her. She can't see how she can be with a hero, as she doesn't want to be left behind. Clark comforts her at the end of this ep, seeing a vulnerability in her.
'Arctic' Lana leaves Clark (again). Lois sees HIS vulnerability and she comforts him. Also, suggests he applies at the Planet.
Then we really start rolling...
Season 8 'Odyssey' reestablishes their bantering relationship. Clark takes up her idea to work at DP. Excellent acting on ED's part. We see her anxiety, excitement, and trepidation over the prospect.
'Plastique' Typical LL, showing CK the ropes. He follows her around like a puppy in some instances. [Wink]
'Instinct' puts in both their faces the fact that they are attracted to each other, and that they might even be destined for each other.
'Committed' Lois is forced to confess her true feelings for Clark.
'Identity' one of the Deus ex machina eps. Lois learns the secret, and Clark remains with the knowledge of how well she took it and stood by him.
'Bride' Lois' feelings for Clark come to the fore.
Clark starts to look at Lois a little differently as well.
'Hex' Clark starts to see his own feelings for Lois, thanks to Chloe pointing it out.
'Stiletto' Clark shows more feelings for Lois as the Blur. Lois chases the Blur, and when Clark gets 'hurt' her true feelings for Clark show.
'Doomsday' more Lois/Blur relationship... but Clark at the end looks devastated when he tells Chloe that he can't find Lois.
Season 9 'Savior' Lois has memories of the future with Clark, though she doesn't know what they are about. However, she misses Clark -- Clark can't focus on his studies with Jor-El once Lois returns.
'Metallo' Lois/Blur development... but at the end, great Clois when Lois tells Clark how she helped the Blur. He looks at her admiringly.
'Rabid' All the Clois scenes here are great...and develop their closeness, I think.
'Echo' Clark is certain of Lois' feelings for him, and we see Lois obviously cares for Clark.
'Crossfire' Clark is willing to do anything to make up for blowing their first date. And they finally kiss.
So, I listed it all out... I think there are lots of moments that build the relationship. There are lots of looks and good acting all through seasons 4-7 between Lois and Clark that I also think build their feelings. I listed the highlighted eps from those, and the important ones from Season 8-9, up to where we are... Could there be more? Sure. But that is what fan fic is for, I suppose. [Smile]
Thanks, Mozartmaid, for laying this out for me. I'll definitely have to review episodes and reassess how I feel about the "Smallville" Lois/Clark relationship. I appreciate the info.
