Rhimes, 28, said she made the decision after penning a storyline for one of her characters on "Grey's Anatomy", reported Entertainment Weekly.
"I was seriously dating somebody and I was like, I don't want to do this. I guess I had been secretly feeling that way and writing it for Cristina.
"We're all so conditioned to want it, I felt like there must be something wrong with me. But the minute I said it out loud to my family, it was fantastic. Now if somebody says, 'Are you looking for that?' I say, 'Nope, looking for a boyfriend, not a husband. And there's a freedom to that. There's no pressure if you're not looking for it.