American singer/songwriter Taylor Swift and Scottish singer/DJ Calvin Harris are reportedly getting serious about their relationship.

According to Hollywood Life, the 25-year-old Shake It Off singer and the 31-year-old DJ are inseparable now.

"They both are very into each other and are in love, and say it to each other quite often," a source said.

Rumours that Rita Ora's former boyfriend and Swift are dating started in March, and the two were pictured shopping in Nashville, dressed similarly.

Later, the two were spotted at a Kenny Chesney concert, getting cosy in the audience. Which followed up with Swift kissing Harris during the Billboard Music Awards 2015, held at the MGM Grand Arena in Las Vegas on 17 May.

The two are very open about their relationship as well.

Harris shared a picture of Swift on Instagram, working at a grill filled with veggies and steaks and complimented her cooking skills.

"She cooks too," he captioned the image.

Taylor Swift Calvin Harris
Calvin Harris complimented Taylor Swift on her cooking skills. Instagram/Calvin Harris
Taylor Swift Calvin Harris
Taylor Swift and Calvin Harris have become inseparable now. Instagram/TaylorSwift

During an interview with Glamour UK magazine, Swift admitted that she does not find it easy having a boyfriend.

"There is no easy way for me to engage with romance. I'm really busy, so I can't. And it's a good thing that I feel really independent and I feel that my friends are all I need," she said.

"It's kind of a sad way I got there, though, being shamed into it. What else is it when you have two boyfriends in one year and everyone's calling you boy crazy, making jokes about you at awards shows? That's public humiliation. And I don't think its fair," the Red hitmaker added.