What!

"What's up with you? You never hang out with me anymore. Did I do something?" Piper asked the smaller teen.
"Oh no, I'm sorry I have um, just been kinda busy," Grace answered trying as hard as possible not to be awkward.
Piper felt like something was going on but couldn't put her finger on it.
"Well if you're not busy I have two tickets to see Dodie Clark in a few days," Piper announced. "You can come if you want."
"Oh my gosh!" She squealed with excitement. "Of course, I wanna go." She hugs her friend. "But I'll need to talk to my mum and stuff so I'll call as soon as possible. Bye Pips I'll talk to you soon."

When Grace falls for her best friend Piper, it gets awkward and hard to be around her best friend. She tries her hardest to hang out with her still but, she can't do it without running into the issue of her finding out about it. She doesn't want their friendship to be ruined.