After Cell was defeated by Gohan, you and the rest of the Z fighters are safe, but you can't but stop thinking about Android 18 for no reason its like something about her. You went back home and and feel relax until you hear the door knock at first it was going to be Gohan or Vegeta or maybe krillin but when you open the door you saw again Android 18

Android 18: So I guess I found you again after the last time we met crosses her arms