They speak too low and too fast, but I speak Portuguese, and this was basically played as a "prank".
The guy gave the idea (of course) - she laughed, knowing too well it was a "prank" and told him to go to her bf's place to surprise him since he went outside. She kept asking "how much time" and when the bf was coming back, she said out loud "love, come here, I have a surprise... ", talked while laughing about how they planned the "prank" and then finished by saying "he came to 'date' (idk the best English translation to this expression) in your place."