We were told things would be “heating up” between Addison and Sam on Private Practice, and last week's Grey's Anatomy crossover episode definitely delivered on that front.

Mark Sloan was the "additional complication" teased for the pair last week, as his (naked) appearance in L.A. made Sam jealous. But now that he's gone, is the path cleared?

Not even close. Pete has also been rumored to be back in the mix. Star Kate Walsh won't reveal much more than that, but does say this about the future of Addison and Sam:

“I love the dynamic between them,” she says. “I think it’s very natural that these two people who are close, who end up running a business together as well as living next door to each other and hanging out would want to explore a relationship.”

The dynamic between these two is an interesting one.

But, she observes, “there’s a huge, massive obstacle in the fact he used to be married to her best friend.” That's definitely a potential snag, but will it stop them? Should it?

We'd guess that whatever feelings might be there, Maya's bombshell dropped on her parents tonight (see sneak previews) will put romance on the back burner for now.

What do you think? Should Addison and Sam couple up?

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.