AceShowbiz -

Taylor Swift is working on her sixth studio album. Rumor has it, the "Shake It Off" hitmaker is making music about her exes Calvin Harris and Tom Hiddleston and she is seeking approval from one of them.

According to OK! Magazine, Taylor is letting Tom have a say in the songs she writes about him as it's part of their fake-relationship deal. "Taylor sends him drafts and loops him in on how the process is going, and nothing will be recorded without Tom's consent," a source reveals.

The source adds, "This was their deal right from the start of their fauxmance...It's a contractual situation and the result is to make them look good."

As for what Taylor will do about Calvin, with whom she had a somewhat acrimonious split, the source says, "Calvin is another story."

While representatives for Taylor and Tom haven't responded to a request for comment, another source close to the "Thor" actor tells Gossip Cop that no such deal exists, adding that the latest OK! report is "completely false."

Previous report said Taylor was making music about her amicable relationships with Tom and Calvin. The "Blank Space" hitmaker also reportedly teamed up with Drake to write a spiteful song about his ex Rihanna.