The Huntsman and Romney families hate each other, actually. And at least Huntsman Senior hates Senator Mike Lee.
Isn't Huntsman Senior also buddies with Harry Reid? There was that whole thing about how Huntsman, Sr. was the one who tipped him off about Romney's tax returns in 2012.
As for the original question... I'm sure McConnell (and a lot of Senate Republicans) and Cruz loathe each other.
Virginian Politicians:
Bob McDonnell/Bill Bolling vs. Ken Cuccinelli
Not a lot of people liked Eric Cantor too, and from what I've heard, Boehner was not fond of him.
I'd say that the Huntsman/Reid relationship was more Huntsman Senior deciding who could do the most damage to Romney with the tax return issue, then any actual fondness for Reid. Plus Harry Reid does not have a lot of non-Nevadan Mormon friends.