After a strong start this season, Ralph Macchio took a step back last week on Dancing With the Stars. The issue? His lack of chemistry with Karina Smirnoff.

Yes, lack of chemistry with Karina Smirnoff. Future Playboy cover girl Karina Smirnoff. If that can't ignite a little romance into your waltz, you've got issues.

That's Mario, the R&B singer who uses only his first name (real name Mario Dewar Barrett), and not Mario Lopez, former Saved By the Bell Star.

Karina Smirnoff is partnering with the former on Dancing With the Stars this season. Three seasons ago, she partnered with Mario Lopez.

Karina Smirnoff Biography

Karina Smirnoff, Mario Karina Smirnoff is on Dancing with the Stars. Her and Mario Lopez have hit it off in real life, too. The two have been dating every since... More »
Full Name
Karina Smirnoff