Continuity mistake: When Fry falls into the cryogenic chamber his whistle drops right next to the chair. When it cuts, the whistle is gone. (00:01:50)
Continuity mistake: When Fry first meets Leela, there's a panel on the wall beside him. It has one red button at the bottom. In subsequent shots it has two buttons. (00:03:50)
Continuity mistake: When Fry and Bender are in the museum and locked in the "Villains" room, Bender breaks the two girders in the window, when he turns around and says "Who I want!" you can see behind him that the girders are back in their original position. (00:14:10)
Continuity mistake: When Fry is queueing for the booth, he opens the piece of paper, showing the picture and writing. Just before he steps in to the booth, it's changed colour and gone blank, then in the next shot it's back as before. (00:07:45)
Continuity mistake: When Fry and Bender are at the bar, the barman hands Bender a bottle of liquor. He takes a big swig of it, but the level in the bottle remains the same. (00:09:55)
Continuity mistake: When Leela, Fry and Bender are in Old New York, when they are all sitting down, after Bender gives Leela her ring back, she puts it on and then it disappears. (00:16:55)
Continuity mistake: When Leela is calling for backup outside the head museum (her call sign is 1BDI: One Beady Eye), her arm band switches from her right arm to her left. (00:11:15)
Continuity mistake: When Bender removes the bars from the cell, it leaves two small pieces of bar jutting out from the top of the window. When he bends another two bars to stop Leela from following them, the pieces are gone. (00:14:25)
Continuity mistake: The windows at the beginning of the episode are inconsistent. Sometimes they're transparent, sometimes opaque. As in the taxi, the newspaper stands and the shop windows. (00:00:30)
Continuity mistake: Inside the suicide booth when Bender has the coin tied to his finger, the size of the knot around his finger differs between shots. (00:08:25)
Continuity mistake: In the bar when Fry spots Leela outside he says "Oh, no. It's the cyclops", there is a can in front of him. When it cuts it's gone. (00:11:00)
Continuity mistake: At the Cryogenic facility, right where Fry shouts "Pizza delivery for..." the desk is positioned almost parallel to the window, but when Fry sits down at the desk, its positioned perpendicular to the window. And Fry can't have moved the desk because in both shots the freezing chamber is placed behind it so he would have had to move that as well. (00:01:20)
Continuity mistake: When Fry and Leela discuss his career, as Fry says "But I don't like being a delivery boy", we see Leela has her hands on the table. When it cuts her hands are under the table. (00:05:45)
Answer: Yes Leela knew from early on that Fry had feelings for her. They were pretending to be a couple in 'A Flight to Remember' from season 1 and Fry tried to get on dates with Leela ever since. She just didn't show signs of the feelings maybe being mutual before some of the later episodes.
Andreas[DK]