Aww snap! It all started back in February when the duo were spotted locking lips at Miley's Bangerz Tour stop at Los Angeles’ Staples Center.

Despite becoming famous for singing songs about kissing girls, Katy told interviewers that she felt a little disgusted when Miley tried to stick her infamous tongue inside her mouth:
"I just walked up to her to give her like a friendly girly kiss, you know, as girls do," Perry said, according to E! News.

"Then she like tried to move her head and go deeper and I pulled away."

"God knows where that tongue has been," Perry said on Tuesday. "We don't know! That tongue is so infamous!"
That statement clearly didn't sit well with Miley Cyrus, who swiftly posted this perfect comeback about Perry and her famous exes: