Hold hands
It was night. It was also late, a fact Star and Marco were very aware of and were therefore trying to beat down Ludo and his gang as quickly as possible so they could go home after a long day at the downtown Googleplex mall.
They won the fight in thirty seconds flat. "A new record!" cheered Star after they finished and they started walking home.
"Heh, yeah..." Chuckled Marco. They came to a crosswalk. On impulse, he grabbed Star's hand as they stepped out into the street.
"What-" Star started to say, turning to look at her best friend.
Marco cut her off, blushing. "You're supposed to hold hands when you're crossing the street."