Splitsville for KATIE COURIC and her toyboy lover BROOKS PERLIN after five years.

Brooks, 17 years Katie’s junior, is moving out of her tony Upper East Side home, The NY Post reported.

A pal, speaking on Couric’s behalf, confirmed to the NY tab, “After five years, they have decided it was time to go their separate ways. Brooks is in the process of moving out of her home.”

Couric, 54, a mother of two lost her beloved hubby Jay Monahan, to colon cancer in 1998, met Perlin in 2006 at a cancer research fundraising event at the Louis Licari Hair Salon.

Recalling their meeting, Katie said, “I thought he was really cute. He asked me if I wanted to have dinner sometime, and I liked that it was so direct and natural.

 “I’ve been called all kinds of things. I’ve been ‘cougared,’ which was just obnoxious. But it’s good enough for Demi, right?”

And THAT worked it well, too – didn’t it, Katie?