Before Sunset

Jesse: Oh, God, why didn't we exchange phone numbers and stuff? Why didn't we do that?
Celine: Because we were young and stupid.
Jesse: Do you think we still are?
Celine: I guess when you're young, you just believe there'll be many people with whom you'll connect with. Later in life, you realize it only happens a few times.
Jesse: And you can screw it up, you know, misconnect.