Alright, I generally wouldn't nitpick about this kind of thing, but here's a quick money breakdown of the movie and dinner costs:
Dinner, not including tip (consider that my contribution) was nearly $32. Let's say $30 for simplicity. 6 people got iced tea (~$2) and about 7 of us ate. Excluding drinks, food was 17.90/7 = 2.56. So. If you had tea, you owe me $5. If not, you owe me $3.
Actually...I don't know what happened to the movies. All I know is that I gave five and Julia gave ten and somehow, someone owes Julia money.