The article doesn't offer any real evidence of the "love" side of this supposed "love-hate relationship". The nearest thing I could find was this bit at the end, which isn't super loving:
“I love Canada, I love the people of Canada,” Mr. Trump said at a cabinet meeting at the White House. “It’s not fair for us to be supporting Canada — If we don’t support them, they don’t subsist as a nation.”
If Vance were president Republican spines would start to grow back. Trump's hold over Republicans is a major part of the problem.