What did Grace just witnessed. Why would Tristan do that to Arman? She is really confused. Grace walks far from their apartment, she's so scared that Tristan will discover that she is peeking on the window. She went back on her door and pretend that she just arrived as Tristan went out of the door.
"Hello. How is your day?" Grace inquired as she met Tristan eye to eye. Pretending to know nothing from what is happening on the other unit.
"I'm good! I just need fresh air!" He answered shortly.
"Ow then I will let you be." Grace stated to run away from that scene she's suddenly scared of Tristan. She can't believe Tristan can over power Arman knowing that the latter is bigger than the former. She closed the door, automatically locking it. She is talking to herself.
"It can't be, Tristan is a nice guy. Maybe it's something else. Maybe they are just role playing". Grace is talking to herself. "Maybe they are gay people. And today they had a fight. They just started being together and now Arman doesn't want to stay anymore. Tristan doesn't want him to leave so he tied him up." That's the only explanation that comes to the head of Grace.