Cruz already said he'd rather see Rubio than Trump get the nomination.
"The candidate's delegates are bound to him thru the first ballot -- they cannot be directed otherwise. After that, they are released and can act on their own."
Exactly. And who do you think they'll break for on the second ballot?
If you want to believe the report. I don't. But that still doesn't mean that Cruz would endorse Rubio.
Exactly. And who do you think they'll break for on the second ballot?
Whoever they want. The candidate has no control over them at that point.