Uh oh. Remember when Calvin Harris and Taylor Swift were happy in love and all was well?
Well that sure has changed.
First up, Taylor moved onto Tom Hiddleston in a really quite a short few weeks, and they've been spotted all over the gaff looking lovey dovey.
No one really knew whether their relationship was real or not but Taylor and Tom didn't care what anyone thought.
And Calvin has kind of been quiet about the whole thing.
UNTIL NOW.
Today, Calvin went on a MEGA Twitter rant about his ex Tay Tay. At first he quote tweeted People Magazine's post that announced that Taylor wrote his hit song This is What You Came For and wrote:
"And she sings on a little bit of it too. Amazing lyric writer and she smashed in as usual."
And all seemed alright, until he revealed: "I wrote the music, produced the song, arranged it and cut the vocals though. And initially she wanted it kept secret, hence the pseudonym."
And then he just carried on tweeting...
"Hurtful to me at this point that her and her team would go so far out of their way to try and make ME look bad at this stage though."
"I figure if you're happy in your new relationship you should focus on that instead of trying to tear your ex bf down for something to do."
THEN HE BROUGHT UP KATY PERRY. Ooh, burn.
Plus: "Please focus on the positive aspects of YOUR life because you've earned a great one."
And he signed out with: "God bless everyone have a beautiful day"
We detect shade but we're loving Calvin for spilling some tea.
GIVE US MORE, CALVIN. We're looking foward to Katy Perry's take on it too.