American Idol runner-up and all-around hottie Katharine McPhee, 23, is engaged to her boyfriend of over a year, Nick Cokas, 42. Even if you’re an “Age ain’t nothing but a number” sort, there’s something kinda creepy about Cokas. Probably the way he emerged around the time she was on American Idol and hangs off her like a monkey. There’s a lot of PDA there. Or maybe it’s because he should have a little more shame since he could be her dad. I’m kidding. I think it’s the hairline. Whoops, kidding about that one too. Cokas took McPhee to her original American Idol audition, which is where they fell in love. And she says their age difference has never been a problem, because Cokas is so fun. Awwww.

American Idol runner-up Katharine McPhee is engaged to actor Nick Cokas, sources tell PEOPLE. McPhee, 23, recently has been showing off a ring from Cokas, 42. They have been dating for more than a year. “Katharine is bubbling over with excitement for her upcoming wedding,” a source says. “She is all smiles when she talks about the planning. It sounds like everything is going very smoothly.”

The couple met in 2005 when they performed in a Los Angeles theater production of The Ghost and Mrs. Muir. Their union began as a friendship, McPhee told PEOPLE last year. “He took me up to my San Francisco (Idol) audition,” McPhee said. That’s when their relationship blossomed. “We totally fell in love,” she said.

As for the 19-year age difference, McPhee says that “was never really a concern.” The two connect because “he just makes things really fun” and “we love business. We love going to meetings together and create things together.” Case in point: the two will join forces on an upcoming independent film titled The Last Caller. McPhee will star in the dark romantic comedy and Cokas will produce.

[From People]

Katharine and Nick were caught checking out wedding cakes last May, so it seems like marriage has been on their minds for a while now. Celebitchy first reported on their relationship in June of ’06 when the couple were seen out and about in New York City. She noted that Cokas is the co-founder of the Zenith film group, which produced plays for the New York Fringe Festival. The couple seem a little mismatched to me, but they’ve been together for a while now and must have a good feeling about their relationship. Congrats to them both.