Read that last bit again: the bruises all happened at the same time.
Then they'd both sing a duet 90s.
Later on, Erin remains hopeful that Andy will end things with Jessica and reunite with her and it becomes clear Andy still has feelings for her , but she later decides that this is not going to happen.
She admires Kelly's casual Friday outfit, commenting that she looks like J.
Andy's response is to snoop behind plants and spy on Kevin and Erin.
After Erin confronts Michael over his hostile feelings for Gabe, Michael angrily questions why she needs his approval as he is not her father.