Archie and Cheryl

"I'm granting you one wish, Archie. Nothing is off the table.. except for my body. Jason would want you to be rewarded."

- Cheryl whispering to Archie in class

Even though Archie Andrews and Cheryl Blossom  both go to the same school and share some of their classes, they never really interacted until recently, following the murder of her twin brother, Jason Blossom.

While the two can be called 'friends', Cheryl did try to flirt with him on several occasions, but as Archie doesn't have that kind of interest in her, he quickly shut her down and changed the subject.

Season 1
Following the illicit affair that Archie and Miss Grundy developed during the summer vacation, they both hear a shotgun the morning of July 4th since they were there at Sweetwater River during Jason Blossom's disappearance. However, they both stayed silent in fear of their forbidden relationship being exposed. As Jason continued to stay missing, his sister Cheryl was left traumatized by the accident, and Archie continued to feel guilty about his secrecy.

In the after-party of the semi-formal, Cheryl invited Archie, Betty and Veronica to her after-party, in which she forced Veronica and Archie to make out for 7 minutes in the closet during a game, Seven Minutes in Heaven, knowing it would cause friction between Betty and Veronica. They ended up kissing against their better judgment, and returned to the party when Cheryl gleefully informed them that Betty had fled.

During biology class, Cheryl was paired with Archie. Archie asked her if she's okay, but she appeared to be slightly disturbed as she now knew that her brother was dead (Kevin and Moose discovered the body with a bullet hole in the head). Despite knowing that her brother's autopsy was currently taking place, she was willing to dissect a frog with no trouble, shocking Archie and her friends.

Later during the football game, Archie was seen running with the rest of the Riverdale Bulldogs. Cheryl noticed the number on his shirt, number 9, that was once Jason's number in the team. It became too much for her, causing her to run away after realizing that her brother was truly gone and would never return again. Veronica follows her to the girl's locker room and embraces her in a comforting hug. The next morning, after Cheryl had explained what she meant by being guilty, Archie decided to tell the police that he'd also heard the gunshot that morning by the lakeside. Later on, Cheryl wanted to repay Archie for corroborating her gunshot story. She asked Josie for a favor who then allowed him to observe the Pussycats’ rehearsal for the upcoming Taste of Riverdale event at which they're going to perform.

Archie later attended the Blossom family's ceremonial maple tree tapping.

Quotes
"If there’s one thing that I’ve learned being in Cheryl’s class, it’s don't underestimate her. And don't bet against her."

- Archie defends Cheryl