Scott Foley appears on Grey's Anatomy tonight as a dying patient who Teddy offers more than medical help to save. Sound like a memorable character of seasons past?

Before the show ruined it forever with ghost sex and other, less tawdry hallucinations, Denny (Jeffrey Dean Morgan) and Izzie (Katherine Heigl) was a classic love story.

Girl meets boy, boy needs heart, girl unethically cuts LVAD wire so boy can get heart, boy dies anyway ... it was a defining story lines of Season 2 and Grey's as a whole.

Does Foley see his character's arc having a similar impact?

"Sure, there are some similarities," Foley tells TV Guide. "The fact that something may happen between Henry and Teddy as it did between Denny and Izzie is a definite possibility."

"That was such a truly epic story line and really, one of the tent poles of the show ... I could never dare to say that Henry would be anything like that."

But the seeds are there. Henry's a patient who has been in and out of the hospital on numerous occasions. He has exhausted his insurance, is out of cash and desperate.

He even proposes to his girlfriend just to get on her health insurance. Just as Henry is about to be discharged, Teddy decides to persuade the Chief to help ... pro-bono.

Why? Because for Teddy, Henry fills a certain void left by Cristina. Teddy feels as though she failed Yang as a mentor, and Henry becomes her new project, so to speak.

"Here is a person who is basically being sent home to die and that, to her, is just unconscionable," Kim Raver says. "So she will do whatever it takes to right the system."

In that sense, Henry and Teddy need each other equally.

"He needs someone to take his cause up, but I think he's just a nice guy," Foley says about whether Henry is using her for the medical benefits. "I think anybody who's sick and possibly terminally ill would do whatever they could to get better."

Will romance blossom? Raver insists Teddy's focus, for now, is medicine:

"That's what feeds the fire to her, not like, 'Oh wow, this guy's really cute and I get to fix him.' It would be much easier if she was conscious of that [spark between them]."

Are you excited to see this Grey's Anatomy story line develop?

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