Yeah, it's somewhere about halfway into the Pilot, when Lois and Clark break the first exclusive on the Messenger. Clark then asks her out, and she says no because she has a date with Lex Luthor... whereupon he gets nasty
This scene is after they published the Messenger story, but the Luthor thing came before. I think that happened right after STAR Labs confirmed that Platt's report was accurate and they knew they had a story. Then Clark asked her out and got jealous, which caused Lois to tell him about her three rules. Then they then discussed the rules and her breaking of them at EPRAD, and this scene is the party after they published the story.