Calvin Harris Threatens to Sue Over Taylor Swift Breakup Rumors

— -- Don’t believe everything you read -- especially if it’s a Taylor Swift/Calvin Harris breakup rumor.

Harris took to Twitter on Monday to denounce a tabloid story that claimed Swift had broken up with him because of infidelity.

“It's not going to be a 'happy ending' for everyone I sue for defamation of character for all these bulls*** stories bye bye,” the Scottish DJ/producer wrote.

According to the report, Swift, 25, dumped Harris, 31, after she found out he had visited a massage parlor where he cheated on her with a masseuse.

Swift has yet to comment, but she did favorite her beau's tweet.

The "Shake It Off" singer's rep also denied the report.