>We’re supposed to be a team!

I've explained it elsewhere, but in short its because the US behaves very erratically towards Europe. Sometimes you are friendly, other times you are threatening to pull out of Nato. Your companies are often very predatory, and the US has frequently put itself in positions where it tries to take advantage of Europe or dictate Europe's foreign policies.

While Europe would like it always to be a friendly relationship, we know that the US's ambitiousness means we can easily fall prey if we aren't wary.

And FWIW, the US isn't viewed in the same light as China, we just don't want to be dominated or be reliant on you.