Hi, I'm Don.

With those words, Benjamin Koldyke introduced himself to How I Met Your Mother fans on this week's new episode.

Unfortunately for Barney and Robin fans, not only with this actor be sticking around the sitcom; creator Carter Bays says he'll be romancing Robin for awhile.

“I don’t want to oversell anything," Bays told Michael Ausiello. "Yes, it’s very soon after her and Barney [split up], but...we’ve had characters that Ted has dated many times, but we haven’t brought in somebody for Robin. We’re seeing where it goes. We’re taking it gingerly."

Koldyke is quickly becoming some what of a guest-starring slut. Aside from dating Robin on HIMYM, he'll play for the other team and get with Alby on season four of Big Love.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.