I continue to think that Romney will ask Rubio, and he'll accept---despite the citizenship controversy. I trust Rubio about as much as Romney, and would vote for that ticket reluctantly.
There is no citizenship controversy. Rubio was born in Miami, Florida and is a natural born citizen, he is over 35 years old, and has been a permanent resident of the US for over 14 years. He's eligible to be VP or President. And yes I agree, I believe Rubio will be the VP choice. The ticket looks to me like it is going to be Romney/Rubio.